# Changelog
All notable changes to this project will be documented in this file.

The format is based on [Keep a
Changelog](https://keepachangelog.com/en/1.0.0/), and this project adheres to
[Semantic Versioning](http://semver.org/spec/v2.0.0.html).

## [Unreleased]

## [v3.3.4] - 2023-08-24

### Fixed
- Correct an internal variable name (see issue
  [\#689](https://github.com/josephwright/siunitx/issues/689))

## [v3.3.3] - 2023-08-23

### Fixed
- Include uncertainty divider in number validation (see issue
  [\#686](https://github.com/josephwright/siunitx/issues/686))

## [v3.3.2] - 2023-08-03

### Fixed
- Move an `expl3` variant definition (see issue
  [\#680](https://github.com/josephwright/siunitx/issues/680))

## [v3.3.1] - 2023-08-01

### Fixed

- Suppress alignment token in formatted asymmetric uncertainty (see issue
  [\#679](https://github.com/josephwright/siunitx/issues/679))

## [v3.3.0] - 2023-07-31

### Added
- Support for Italian (see issue
  [\#650](https://github.com/josephwright/siunitx/issues/650))
- Abbreviations `\T`, `\mT`, `\uT` (see issue
  [\#670](https://github.com/josephwright/siunitx/issues/670))
- Option `range-open-phrase`
- Option `round-direction` to allow 'truncation' of rounded
  values (see issue
  [\#664](https://github.com/josephwright/siunitx/issues/664))
- Option `uncertainty-round-direction` (see issue
  [\#628](https://github.com/josephwright/siunitx/issues/628))
- Support for asymmetrical uncertainties, including new option
  `input-uncertainty-divider` (see issue
  [\#675](https://github.com/josephwright/siunitx/issues/675))
- Options for bracket control:
  - `compound-close-bracket`
  - `compound-open-bracket`
  - `list-close-bracket`
  - `list-open-bracket`
  - `product-close-bracket` 
  - `product-open-bracket` 
  - `range-close-bracket` 
  - `range-open-bracket` 
  (see issue
  [\#262](https://github.com/josephwright/siunitx/issues/262))
- Option `table-model-setup` (see issue
  [\#659](https://github.com/josephwright/siunitx/issues/659))
- Options `list-input-separator` and `product-input-separator` (see issue
  [\#603](https://github.com/josephwright/siunitx/issues/603))
- Options `compound-independent-prefix`, `list-independent-prefix`,
  `product-independent-prefix` and `range-independent-prefix` (see issue
  [\#554](https://github.com/josephwright/siunitx/issues/554))
- Hint for overloading `\num` and `\qty` (see issue
  [\#648](https://github.com/josephwright/siunitx/issues/648))

### Changed

- Support bracing of decimal marker in tables as an alternative
  to `\mathord` (see issue
  [\#527](https://github.com/josephwright/siunitx/issues/527))

## [v3.2.9] - 2023-07-26

### Fixed

- Correct alignment of uncertainties in tables (see issue
  [\#678](https://github.com/josephwright/siunitx/issues/678))

## [v3.2.8] - 2023-07-25

### Fixed
- Suppression of leading `1` when `per-mode = symbol` is used with
  non-repeated units ranges (see issue
  [\#677](https://github.com/josephwright/siunitx/issues/677))

## [v3.2.7] - 2023-07-20

### Fixed
- Spacing in quantities when e.g. `exponent-mode = {{\times}}`
  is used (see issue
  [\#672](https://github.com/josephwright/siunitx/issues/672))

## [v3.2.6] - 2023-06-12

### Fixed
- Printing of symbols explicitly wrapped in `\ensuremath`
  (see issue
  [\#656](https://github.com/josephwright/siunitx/issues/656))
- Printing of magnitudes for polar values when not parsing numbers
  (see issue
  [\#658](https://github.com/josephwright/siunitx/issues/658))
 - Alignment of separated uncertainties in tables
  (see issue
  [\#665](https://github.com/josephwright/siunitx/issues/665))

## [v3.2.5] - 2023-04-13

### Fixed
- Use of `\mathsf` for sanserif text documents (see issue
  [\#655](https://github.com/josephwright/siunitx/issues/655))

## [v3.2.4] - 2023-04-04

### Fixed
- Parsing of 'full' uncertainty parts with leading zeros (see issue
  [\#652](https://github.com/josephwright/siunitx/issues/652))

## [v3.2.3] - 2023-03-14

### Fixed
- Allow for `parse-numbers = false` in handling `\ang` (see issue
  [\#649](https://github.com/josephwright/siunitx/issues/649))

## [v3.2.2] - 2023-03-04

### Fixed
- Value of uncertainty around decimal marker when rounding
  to `10` (see issues
  [\#644](https://github.com/josephwright/siunitx/issues/644)
  and [\#646](https://github.com/josephwright/siunitx/issues/646))
- Exponent format output when rounding to an uncertainty (see issue
  [\#645](https://github.com/josephwright/siunitx/issues/645))

## [v3.2.1] - 2023-02-21

### Fixed

- Extend list of math mode symbols replaced in text mode (see issue
  [\#640](https://github.com/josephwright/siunitx/issues/640))
- Handling of uncertainty if larger than main value when rounding (see issue
  [\#641](https://github.com/josephwright/siunitx/issues/641))

## [v3.2.0] - 2023-01-03

## Added
- Option `exponent-thresholds` and option setting `exponent-mode = threshold`
  to allow selective use of exponent mode output (see issue
  [\#204](https://github.com/josephwright/siunitx/issues/204))
- Options `print-exponent-implicit-plus` and `print-mantissa-implicit-plus`
  (see issue
  [\#493](https://github.com/josephwright/siunitx/issues/493))
- Abbreviation `\mF` (see issue
  [\#624](https://github.com/josephwright/siunitx/issues/624))
- New SI prefixes `\ronna`, `\ronto`, `\quetta` and `\quecto` (see issue
  [\#629](https://github.com/josephwright/siunitx/issues/629))

### Changed
- Extend alignment of uncertainties in tabulars to include decimal marker
  (see issue [\#370](https://github.com/josephwright/siunitx/issues/370))
- Require `expl3` 2022-11-09 or later

## [v3.1.11] - 2022-12-05

### Fixed
- Alignment of exponents without mantissa values (see issue
  [\#633](https://github.com/josephwright/siunitx/issues/633))

## [v3.1.10] - 2022-11-16

### Fixed
- Rounding to uncertainty in some cases (see issue
  [\#627](https://github.com/josephwright/siunitx/issues/627))

## [v3.1.9] - 2022-10-23

### Added
- Option `print-complex-unity`

## Fixed
- Printing of complex values of exactly one (see issue
  [\#625](https://github.com/josephwright/siunitx/issues/625))

## [v3.1.8] - 2022-10-04

### Fixed
- Rounding to order of magnitude (see issue
  [\#622](https://github.com/josephwright/siunitx/issues/622))

## [v3.1.7] - 2022-09-07

### Changed
- Defensive step against active symbol characters in Unicode engines

## [v3.1.6] - 2022-08-08

### Fixed
- Rounding to uncertainty where the last uncertainty digit is zero (see issue
  [\#616](https://github.com/josephwright/siunitx/issues/616))
- Rounding to uncertainty which is bigger than the value (see issue
  [\#617](https://github.com/josephwright/siunitx/issues/617))

## [v3.1.5] - 2022-07-23

### Fixed
- Rounding to figures with a trailing zero and non-zero integer part (see issue
  [\#615](https://github.com/josephwright/siunitx/issues/615))

## [v3.1.4] - 2022-06-22

### Fixed
- Spacing of `\arcminute` and `\arcsecond` in quantities (see issue
  [\#608](https://github.com/josephwright/siunitx/issues/608))

## [v3.1.3] - 2022-06-07

### Fixed
- Behavior of `print-integer-zero` in tables (see issue
  [\#604](https://github.com/josephwright/siunitx/issues/604))

## [v3.1.2] - 2022-05-31

### Fixed
- Correct sign when fixing a negative exponent  (see issue
  [\#602](https://github.com/josephwright/siunitx/issues/602))

## [v3.1.1] - 2022-05-03

### Changed
- Allow for _e.g._ `\clist_item:Nn` usage inside `\unit` argument

## [v3.1.0] - 2022-04-25

### Added
- Support for complex numbers in polar form both as input and output
- Support for multiple uncertainty values in both short and long form
  in input, and supporting options `uncertainty-descriptors`,
  `uncertainty-descriptor-mode` and `uncertainty-descriptor-separator`
- Options `text-subscript-command` and `text-superscript-command` to allow
  customisation of script printing in text mode (see issue
    [\#595](https://github.com/josephwright/siunitx/issues/595))
- Options `complex-angle-unit`, `complex-mode`, `complex-symbol-angle`,
  and `complex-symbol-degree` to support complex numbers in polar form
- Options `digit-group-size`, `digit-group-first-size` and
  `digit-group-other-size` to control digit grouping
- Options `display-per-mode` and `inline-per-mode` to offer additional
  flexiblity in `per-mode` control
- Option `per-symbol-script-correction`
- Option `power-half-as-sqrt`
- Option `retain-negative-zero`
- Option `round-zero-positive` to control the outcome of rounding
  negative values to zero
- Options `zero-decimal-as-symbol` and `zero-symbol` to support conversion of
  a zero decimal part to a dash or other symbol
- Option setting `per-mode = single-symbol` to allow exactly one symbol to be
  present
- Unit abbreviations `\C`, `\nC`, `\uC`, `\mC` (see issue
  [\#575](https://github.com/josephwright/siunitx/issues/575))
- Unit abbreviations `\fH` and `\pH` (see issue
  [\#596](https://github.com/josephwright/siunitx/issues/596))
- Unit abbreviation `\nW` (see issue
  [\#596](https://github.com/josephwright/siunitx/issues/596))
- Brazilian and Portuguese translations for lists and ranges (see issue
  [\#514](https://github.com/josephwright/siunitx/issues/514))

### Changed
- Issue an error if the `units` package is loaded

### Deprecated
- Option setting `per-mode = symbol-or-fraction`

## [v3.0.50] - 2022-04-04

### Fixed
- Spacing of sign when using "output-exponent-marker"  (see issue
  [\#600](https://github.com/josephwright/siunitx/issues/600))
- Behavior of "minimum-decimal-digits" with uncertainties  (see issue
  [\#601](https://github.com/josephwright/siunitx/issues/601))

## [v3.0.49] - 2022-02-15

### Added
- Option `retain-explicit-decimal-marker` to allow printing of
  significant decimal markers (see issue
  [\#590](https://github.com/josephwright/siunitx/issues/590))
- Option `print-zero-integer` to replace older `add-integer-zero` option
  (see issue [\#587](https://github.com/josephwright/siunitx/issues/587))

## [v3.0.48] - 2022-02-07

### Added
- Polish locale

### Fixed
- Printing blank entries in text mode (see issue
  [\#585](https://github.com/josephwright/siunitx/issues/585))

## [v3.0.47] - 2022-02-03

### Changed
- Better handling of `\mathord` in text mode

## [v3.0.46] - 2022-02-02

### Fixed
- Spacing around math symbols in text mode (see issue
  [\#583](https://github.com/josephwright/siunitx/issues/583))

## [v3.0.45] - 2022-01-27

### Fixed
- Include `reset-text-shape = false` in emulation of `detect-all` (see issue
  [\#579](https://github.com/josephwright/siunitx/issues/579))

## [v3.0.44] - 2022-01-26

### Added
- Hint concerning hyphen inside `\text`

### Fixed
- Handling of `output-exponent-marker` in tables (see issue
  [\#578](https://github.com/josephwright/siunitx/issues/578))

## [v3.0.43] - 2022-01-20

### Fixed
- Printing `\ohm` with `beamer` class (see issue
  [\#572](https://github.com/josephwright/siunitx/issues/572))

## [v3.0.42] - 2022-01-18

### Added
- Slovene translations (see pull request
  [\#570](https://github.com/josephwright/siunitx/pull/570))

### Changed
- Enable new LaTeX option handling if available
- Use U+2126 rather than U+03A9 for `\ohm` in text mode with Unicode
  engines

## [v3.0.41] - 2022-01-13

### Fixed
- Rounding to an uncertainty purely in the integer part (see issue
  [\#568](https://github.com/josephwright/siunitx/issues/568))

## [v3.0.40] - 2022-01-12

### Changed
- Remove a deprecated `expl3` function

## [v3.0.39] - 2022-01-05

### Fixed
- Differentiate unity- and missing mantissa values (see issue
  [\#565](https://github.com/josephwright/siunitx/issues/565))

## [v3.0.38] - 2022-01-04

### Changed
- Allow for empty values in lists and ranges (see issue
  [\#566](https://github.com/josephwright/siunitx/issues/566))

## [v3.0.37] - 2021-12-04

### Changed
- Documentation and warning improvements for "drop-exponent" option

## [v3.0.36] - 2021-11-18

### Changed
- Internal changes to tabular code to improve visual output when integer part
  is overfull (in preparation for _The LaTeX Companion_, 3rd Edition)

### Fixed
- Printing fractional units using `\sfrac` (see issue
  [\#558](https://github.com/josephwright/siunitx/issues/558))

## [v3.0.35] - 2021-11-03

### Changed
- Delay loading of `color` package to `begindocument` hook

### Fixed
- Text mode replacement of `\mathrm` in super/subscripts (see issue
  [\#556](https://github.com/josephwright/siunitx/issues/556))

## [v3.0.34] - 2021-10-26

### Fixed
- Printing of exponent for complex values when converting to a prefix (see
  issue [\#555](https://github.com/josephwright/siunitx/issues/555))

## [v3.0.33] - 2021-10-15

### Changed
- Further improvements to degree symbol in math mode

### Fixed
- Handling of comparators when `mode = text` (see issue
  [\#551](https://github.com/josephwright/siunitx/issues/551)
- Handling of combination of `mode = text` with `tight-spacing` (see issue
  [\#553](https://github.com/josephwright/siunitx/issues/553)

## [v3.0.32] - 2021-09-29

### Added
- Hint concerning non-standard font encodings (see issues
  [\#547](https://github.com/josephwright/siunitx/issues/547) and
  [\#550](https://github.com/josephwright/siunitx/issues/550))

### Changed
- Use math mode symbol for degree where possible (see issue
  [\#550](https://github.com/josephwright/siunitx/issues/550))

## [v3.0.31] - 2021-09-22

### Fixed
- Avoid infinite loop with `tex4ht` (issue
  [\#549](https://github.com/josephwright/siunitx/issues/549))

## [v3.0.30] - 2021-09-14

### Changed
- Delay selection of math mode to better support `tex4ht` (issue
  [\#530](https://github.com/josephwright/siunitx/issues/530))

### Fixed
- Ensure that units contain `\text` are correctly formatted when printing
  in math mode (issue
  [\#542](https://github.com/josephwright/siunitx/issues/542))
- Use `\ExplLoaderFileDate` to test for `expl3` version (issue
  [\#544](https://github.com/josephwright/siunitx/issues/544))
- Apply number processing options to angles (issue
  [\#546](https://github.com/josephwright/siunitx/issues/546))

## [v3.0.29] - 2021-09-06

### Fixed
- Only apply `text-series-to-math` when the math version is
  `normal` (issue
  [\#541](https://github.com/josephwright/siunitx/issues/541))

## [v3.0.28] - 2021-08-27

### Fixed
- Pre-spacing for free-standing units (issue
  [\#538](https://github.com/josephwright/siunitx/issues/538))

## [v3.0.27] - 2021-08-22

### Fixed
- Detection of unchanged symbols when font is sanserif (issue
  [\#535](https://github.com/josephwright/siunitx/issues/535))

## [v3.0.26] - 2021-08-21

### Fixed
- Accidental printing of `T@TS1` with `beamer` (issue
  [\#534](https://github.com/josephwright/siunitx/issues/534))

## [v3.0.25] - 2021-08-16

### Changed
- Default to sanserif units if `\familydefault` is `\sfdefault`
  (issue [\#516](https://github.com/josephwright/siunitx/issues/516))

### Fixed
- Rounding to an uncertainty of the same magnitude as the
  value (issue
  [\#524](https://github.com/josephwright/siunitx/issues/524))
- Extend `propogate-math-font` to cover `\mathbf` and `\mathit`
  (issue [\#525](https://github.com/josephwright/siunitx/issues/525))
- Position of non-aligned non-numeric material in table cells when
  centering decimal marker (issue
  [\#526](https://github.com/josephwright/siunitx/issues/526))
- Treatment of multiple tokens for `input-ignore` (issue
  [\#531](https://github.com/josephwright/siunitx/issues/531))

## [v3.0.24] - 2021-08-04

### Fixed
- Option setting `round-half = even` (issue
  [\#519](https://github.com/josephwright/siunitx/issues/519))
- Handling of standard deviation-like uncertainties where decimal is longer than
  main part (issue [\#522](https://github.com/josephwright/siunitx/issues/522))
- Rounding to uncertainty in the integer part (issue
  [\#523](https://github.com/josephwright/siunitx/issues/523))

## [v3.0.23] - 2021-07-26

### Fixed
- Load order of `xparse` (issue
  [\#518](https://github.com/josephwright/siunitx/issues/518))

## [v3.0.22] - 2021-07-22

### Changed
- Support `table-text-alignment = none` for interoperation with
  `tabularray` (issue
  [\#510](https://github.com/josephwright/siunitx/issues/510))

### Fixed
- Support for `input-remove` (issue
  [\#511](https://github.com/josephwright/siunitx/issues/511))
- Interaction with `cellspace` package (issue
  [\#512](https://github.com/josephwright/siunitx/issues/512))

## [v3.0.21] - 2021-07-20

### Fixed
- Print degree symbol if `fontspec` package is loaded with
  `no-math` option (issue
  [\#505](https://github.com/josephwright/siunitx/issues/505))
- Handling of 'over-long' separated uncertainties (issue
  [\#506](https://github.com/josephwright/siunitx/issues/506))
- Symbol for arcs in text mode (issue
  [\#507](https://github.com/josephwright/siunitx/issues/507))

## [v3.0.20] - 2021-07-14

### Fixed
- Interaction with `kotex` (issue
  [\#502](https://github.com/josephwright/siunitx/issues/502))
- Handling of groups in literal units (issue
  [\#503](https://github.com/josephwright/siunitx/issues/503))

## [v3.0.19] - 2021-07-06

### Fixed
- Emulation for `\SendSettingsToPgf` (issue
  [\#501](https://github.com/josephwright/siunitx/issues/501))

## [v3.0.18] - 2021-07-04

### Fixed
- Printing of reciprocal units when `per-mode = symbol` is active
  (issue [\#500](https://github.com/josephwright/siunitx/issues/500))

## [v3.0.17] - 2021-06-29

### Fixed
- Load order issue with `soulpos` (issue
  [\#498](https://github.com/josephwright/siunitx/issues/498))

## [v3.0.16] - 2021-06-24

### Fixed
- Treatment of spaces before `/` in literal units (issue
  [\#495](https://github.com/josephwright/siunitx/issues/495))
- Printing of `\mathchoice` entries in text mode (issue
  [\#497](https://github.com/josephwright/siunitx/issues/497))

## [v3.0.15] - 2021-06-22

### Fixed
- Bracketing of complex quantities (issue
  [\#491](https://github.com/josephwright/siunitx/issues/491))
- Printing of `\ohm` with `fontspec` (issue
  [\#492](https://github.com/josephwright/siunitx/issues/492))
- Suppress printing implicit plus for zero exponents (issue
  [\#493](https://github.com/josephwright/siunitx/issues/493))
- Engineering exponents with some exponent values (issue
  [\#494](https://github.com/josephwright/siunitx/issues/494))

## [v3.0.14] - 2021-06-17

### Changed
- Auto-enable `table-fixed-width` when setting `table-column-width`
  to a positive value
- Expand `table-format` input before splitting

### Fixed
- Incorrect handling of `{}` in literal units (issue
  [\#487](https://github.com/josephwright/siunitx/issues/487))
- Placement of sign in some complex numbers (issue
  [\#488](https://github.com/josephwright/siunitx/issues/488))
- Printing of units in quantities when `uncertainty-mode` is
  `separate` and an exponent is present (issue
    [\#490](https://github.com/josephwright/siunitx/issues/490))

## [v3.0.13] - 2021-06-14

### Added
- Catalan translations for lists and ranges

### Fixed
- Position of complex root when no real part is present (issue
  [\#481](https://github.com/josephwright/siunitx/issues/481))
- Skip defining `\unit` if the `units` package is loaded (issue
  [\#482](https://github.com/josephwright/siunitx/issues/482))
- Printing units in compound quantities when `parse-numbers` is
  false (issue [\#484](https://github.com/josephwright/siunitx/issues/484))
- Printing of `1` when both `print-zero-exponent` and
  `print-unity-mantissa` are false (issue
    [\#485](https://github.com/josephwright/siunitx/issues/485))
- Printing of ohm symbol in text mode with `fourier` package (issue
  [\#486](https://github.com/josephwright/siunitx/issues/486))

## [v3.0.12] - 2021-06-09

### Fixed
- Modify warning message (fixes
  [\#476](https://github.com/josephwright/siunitx/issues/476))
- Rounding zero values to a fixed number of places (issue
  [\#477](https://github.com/josephwright/siunitx/issues/477))
- Remove stray debug code in symbol allocation (issue
  [\#478](https://github.com/josephwright/siunitx/issues/478))

## [v3.0.11] - 2021-06-07

### Changed
- Improve some fallback unit definitions

### Fixed
- Printing of symbols with encodings other than UTF-8 (issue
  [\#470](https://github.com/josephwright/siunitx/issues/470))
- Argument order for `\DeclareSIPrefix` (issue
  [\#471](https://github.com/josephwright/siunitx/issues/471))
- Emulation of `number-unit-separator` (issue
  [\#473](https://github.com/josephwright/siunitx/issues/473))

## [v3.0.10] - 2021-06-04

### Changed
- Documentation improvements

### Fixed
- Incompatibility with REVTeX (issue
  [\#469](https://github.com/josephwright/siunitx/issues/469))

## [v3.0.9] - 2021-06-01

### Changed
- Documentation improvements
- Add a hint for formatting regression tables

### Fixed
- Suppress some spurious overfull box warnings
- Issue an error with `output-product`
- Rounding of uncertainties falling in the integer part (issue
  [\#454](https://github.com/josephwright/siunitx/issues/454))
- Printing in text mode for compound quantities (issue
  [\#463](https://github.com/josephwright/siunitx/issues/463))
- Correctly handle `\protect` in literal units (issue
  [\#464](https://github.com/josephwright/siunitx/issues/464))
- Interpretation of uncertainties in integers (issue
  [\#465](https://github.com/josephwright/siunitx/issues/465))

## [v3.0.8] - 2021-05-31

### Changed
- Documentation improvements
- Add `\barn`, `\knot`, `\mmHg`, `\nauticalmile` to list of deprecated units
- Provide a fallback route for deprecated units

### Fixed
- Correct printing of `10^{0}` (issue
  [\#459](https://github.com/josephwright/siunitx/issues/459))
- Emulation of `group-four-digits` (issue
  [\#461](https://github.com/josephwright/siunitx/issues/461))

## [v3.0.7] - 2021-05-28

### Fixed
- Formatting of some literal units (issue
  [\#449](https://github.com/josephwright/siunitx/issues/449))
- Issue a warning for removed option `load-configurations` (issue
  [\#455](https://github.com/josephwright/siunitx/issues/455))
- Printing of `\times` and `\cdot` in text mode when using a locale
  (issue [\#457](https://github.com/josephwright/siunitx/issues/457))
- Implement missing `output-exponent-marker` (issue
  [\#458](https://github.com/josephwright/siunitx/issues/458))

## [v3.0.6] - 2021-05-25

### Changed
- Documentation improvements

### Fixed
- Avoid error if `forbid-literal-units` is set in the preamble (issue
  [\#452](https://github.com/josephwright/siunitx/issues/452))
- Format separate uncertainty correctly where it falls purely in the integer
  part (issue [\#454](https://github.com/josephwright/siunitx/issues/454))

## [v3.0.5] - 2021-05-24

### Changed
- Documentation improvements

### Fixed
- Bracket separate uncertainties in compound quantities (issue
  [\#441](https://github.com/josephwright/siunitx/issues/441))
- Color negative values in table cells correctly (issue
  [\#444](https://github.com/josephwright/siunitx/issues/444))
- Avoid consumption of any math alphabets (issue
  [\#445](https://github.com/josephwright/siunitx/issues/445))
- Mark `\bar` as removed (issue
  [\#448](https://github.com/josephwright/siunitx/issues/448))

## [v3.0.4] - 2021-05-21

### Changed
- Standardise and document the position of `\color` in negative values
  within the code-level API

### Fixed
- Alignment of integers in tables when `parse-numbers = tables` (issue
  [\#442](https://github.com/josephwright/siunitx/issues/442))

## [v3.0.3] - 2021-05-20

### Changed
- Documentation improvements

### Fixed
- Emulation of `input-symbols` (fixes #431)
- Standard setting for `group-minimum-digits` (issue
  [\#436](https://github.com/josephwright/siunitx/issues/436))
- Application of negative color in table cells (issue
  [\#439](https://github.com/josephwright/siunitx/issues/439))

## [v3.0.2] - 2021-05-19

### Changed
- Documentation improvements
- Better default for `product-symbol`

### Fixed
- Option settings `group-digits = true` and `group-digits = false` (issue
  [\#422](https://github.com/josephwright/siunitx/issues/422))
- Correct position of decimal marker in some tables (issue
  [\#423](https://github.com/josephwright/siunitx/issues/423))
- Coloring of negative numbers in tables (issue
  [\#424](https://github.com/josephwright/siunitx/issues/424))
- Alignment of numbers when printing without a `table-format` (issue
  [\#424](https://github.com/josephwright/siunitx/issues/424))
- Emulation of `\celsius` (issue
  [\#426](https://github.com/josephwright/siunitx/issues/426))
- Allow `\cdot` to work in text mode (issue
  [\#430](https://github.com/josephwright/siunitx/issues/430))

### Deprecated
- Unit macro `\celsius`

## [v3.0.1] - 2021-05-18

### Added
- Public `\l_siunitx_unit_fraction_tl` variable

### Changed
- Documentation improvements

### Fixed
- Printing of fractional units in text mode (issue
  [\#418](https://github.com/josephwright/siunitx/issues/418))
- Include `siunitx-abbreviations.cfg` in fallback v2 files (issue
  [\#419](https://github.com/josephwright/siunitx/issues/419))
- French translation of 'to' for ranges (issue
  [\#421](https://github.com/josephwright/siunitx/issues/421))

## [v3.0.0] - 2021-05-17

### Added
- `\complexnum`
- `\complexqty`
- `\qty`
- `\qtylist`
- `\qtypower`
- `\qtylist`
- Option `allow-quantity-breaks`
- Option `angle-mode`
- Option `angle-separator`
- Option `angle-symbol-degree`
- Option `angle-symbol-minute`
- Option `angle-symbol-second`
- Option `drop-exponent`
- Option `drop-uncertainty`
- Option `drop-zero-decimal`
- Option `evaluate-expression`
- Option `exponent-mode`
- Option `expression`
- Option `fill-angle-degrees`
- Option `fill-angle-minutes`
- Option `fill-angle-seconds`
- Option `fraction-command`
- Option `list-exponents`
- Option `minimum-decimal-digits`
- Option `minimum-integer-digits`
- Option `overwrite-commands`
- Option `prefix-mode`
- Option `print-implicit-plus`
- Option `print-unity-mantissa`
- Option `print-zero-exponent`
- Option `product-exponents`
- Option `product-mode`
- Option `product-phrase`
- Option `product-symbol`
- Option `qualifier-phrase`
- Option `quantity-product`
- Option `range-exponents`
- Option `round-pad`
- Option `number-angle-product`
- Option `propagate-math-font`
- Option `reset-math-version`
- Option `reset-text-family`
- Option `reset-text-series`
- Option `reset-text-shape`
- Option `separate-uncertainty-units`
- Option `series-version-mapping`
- Option `table-align-text-after`
- Option `table-align-text-before`
- Option `table-alignment-mode`
- Option `table-column-type`
- Option `text-family-to-math`
- Option `text-font-command`
- Option `text-series-to-math`
- Option `uncertainty-mode`
- Option `unit-font-command`
- Option setting `list-mode = bracket`
- Option setting `mode = match`
- Option setting `number-mode = match`
- Option setting `per-mode = power-positive-first`
- Option setting `qualifier-mode = bracket`
- Option setting `qualifier-mode = phrase`
- Option setting `qualifier-mode = combine`
- Option setting `product-mode = bracket`
- Option setting `range-mode = bracket`
- Option setting `text-mode = match`
- Option setting `unit-mode = match`

### Changed
- Modular re-write to provide code-level API
- Update unit support to 9th edition of SI Brochure

### Deprecated
- `\DeclareSIPrePower`
- `\DeclareSIPostPower`
- `\SIUnitSymbolAngstrom`
- `\SIUnitSymbolArcminute`
- `\SIUnitSymbolArcsecond`
- `\SIUnitSymbolCelsius`
- `\SIUnitSymbolDegree`
- `\SIUnitSymbolMicro`
- `\SIUnitSymbolOhm`
- Option `add-decimal-zero`
- Option `allow-number-unit-break`
- Option `add-arc-degree-zero`
- Option `add-arc-minute-zero`
- Option `add-arc-second-zero`
- Option `arc-separator`
- Option `explicit-sign`
- Option `extract-mass-in-kilograms`
- Option `fraction-function`
- Option `omit-uncertainty`
- Option `overwrite-functions`
- Option `multi-part-units`
- Option `number-angle-product`
- Option `number-unit-product`
- Option `prefixes-as-symbols`
- Option `retain-unity-mantissa`
- Option `retain-zero-uncertainty`
- Option `retain-zero-exponent`
- Option `scientific-notation`
- Option `separate-uncertainty`
- Option `table-align-text-post`
- Option `table-align-text-pre`
- Option `table-comparator`
- Option `table-figures-decimal`
- Option `table-figures-exponent`
- Option `table-figures-integer`
- Option `table-figures-uncertainty`
- Option `table-omit-exponent`
- Option `table-parse-only`
- Option `table-sign-exponent`
- Option `table-sign-mantissa`
- Option `table-space-text-post`
- Option `table-space-text-pre`
- Option `zero-decimal-to-integer`
- Option setting `list-units = brackets`
- Option setting `per-mode = reciprocal`
- Option setting `per-mode = reciprocal-positive-first`
- Option setting `qualifier-mode = brackets`
- Option setting `qualifier-mode = space`
- Option setting `qualifier-mode = text`
- Option setting `product-mode = brackets`
- Option setting `range-units = brackets`
- Option setting `table-number-alignment = center-decimal-marker`

### Removed
- Option `abbreviations`
- Option `add-integer-zero`
- Option `binary-units`
- Option `close-bracket`
- Option `detect-all`
- Option `detect-display-math`
- Option `detect-family`
- Option `detect-inline-family`
- Option `detect-inline-weight`
- Option `detect-mode`
- Option `detect-none`
- Option `detect-shape`
- Option `detect-weight`
- Option `input-protect-tokens`
- Option `input-quotient`
- Option `literal-superscript-as-power`
- Option `open-bracket`
- Option `quotient-mode`
- Option `math-angstrom`
- Option `math-arcminute`
- Option `math-arcsecond`
- Option `math-celsius`
- Option `math-degree`
- Option `math-micro`
- Option `math-ohm`
- Option `math-rm`
- Option `math-sf`
- Option `math-tt`
- Option `redefine-symbols`
- Option `number-math-rm`
- Option `number-math-sf`
- Option `number-math-tt`
- Option `number-text-rm`
- Option `number-text-sf`
- Option `number-text-tt`
- Option `table-unit-alignment`
- Option `text-angstrom`
- Option `text-arcminute`
- Option `text-arcsecond`
- Option `text-celsius`
- Option `text-degree`
- Option `text-micro`
- Option `text-ohm`
- Option `text-rm`
- Option `text-sf`
- Option `text-tt`
- Option `unit-math-rm`
- Option `unit-math-sf`
- Option `unit-math-tt`
- Option `unit-text-rm`
- Option `unit-text-sf`
- Option `unit-text-tt`
- Option `version-1-compatibility`

## [v2.8e] - 2021-04-17

### Fixed
- Missing setting in emulation of v1 option `repeatunits`

## [v2.8d] - 2021-04-09

### Changed
- Correct file dates for configuration files

## [v2.8c] - 2021-03-27

### Changed
- Updates to follow LaTeX2e kernel revisions
- No longer apply `\addtocontents` patch

## [v2.8b] - 2020-02-25

### Fixed
- Correct `\ohm` when `newtxmath` is loaded

## [v2.8a] - 2020-02-23

### Fixed
- Correct `\ohm` when `unicode-math` is loaded (issue [\#377](https://github.com/josephwright/siunitx/issues/377))

## [v2.8] - 2020-02-20

### Changed
- Use companion font symbols/force `textcomp` loading

## [v2.7v] - 2020-02-19 [UNUSED]

### Fixed
- Appearance of superscript decimals with comma decimal marker

## [v2.7u] - 2020-01-15

### Changed
- Modified internals to track `expl3` changes

## [v2.7t] - 2019-10-10

### Fixed
- Combination of `round-half = even` with `round-precision = 0`
- Include sign in astronomy-style angles

## [v2.7s] - 2018-05-17

### Changed
- Revert package date format change in v2.7l

## [v2.7r] - 2018-05-16

### Changed
- Modified internals to track `expl3` changes

### Fixed
- Collect tokens before `\ignorespaces` in tabulars (esp. with
  REVTeX) (issue [\#337](https://github.com/josephwright/siunitx/issues/337))

## [v2.7q] - 2018-05-11

### Fixed
- Allow for `cellspace` "column" option (issue [\#315](https://github.com/josephwright/siunitx/issues/315))

## [v2.7p] - 2018-05-10

### Changed
- Avoid an `expl3` internal function
- Better approach to removing `\ignorespaces`

## [v2.7o] - 2018-05-02 [UNUSED]

## [v2.7n] - 2018-04-27

### Fixed
- Issue with symbolic input and digit grouping

## [v2.7m] - 2018-03-20

### Changed
- Update `\astronomicalunit` symbol (issue [\#332](https://github.com/josephwright/siunitx/issues/332))

## [v2.7l] - 2018-03-11

### Added
- Abbreviations for milli/microjoule

### Changed
- Switch package date format to ISO

### Fixed
- Scope of some internal variable corrected (issue [\#327](https://github.com/josephwright/siunitx/issues/327))
- Track `unicode-math` changes (issue [\#331](https://github.com/josephwright/siunitx/issues/331))

## [v2.7k] - 2017-11-26

### Fixed
- Incorrect internal variable renamed (issue [\#320](https://github.com/josephwright/siunitx/issues/320))
- Suppress leading "1" when units are not parsed (issue [\#318](https://github.com/josephwright/siunitx/issues/318))
- Correct default value for `arc-separator` (issue [\#319](https://github.com/josephwright/siunitx/issues/319))

## [v2.7j] - 2017-08-02

### Fixed
- Use correct name for internal boolean

## [v2.7i] - 2017-07-23

### Fixed
- Incorrect internal variable renamed (issue [\#311](https://github.com/josephwright/siunitx/issues/311))

## [v2.7h] - 2017-06-13

### Changed
- Some abuses of `expl3` box functions removed (issue [\#309](https://github.com/josephwright/siunitx/issues/309))

## [v2.7g] - 2017-05-19

### Changed
- Use new `expl3` functions for some internal tests

### Fixed
- Change box collection following `expl3` update
- Links to BIPM website

## [v2.7f] - 2017-03-23

### Changed
- Name of 'hidden' function used by for bookmark generation

### Fixed
- Spacing when option `per-mode = reciprocal-positive-first` is active

## [v2.7e] - 2017-03-06

### Fixed
- Properly handle signs in `table-format` key (issue [\#303](https://github.com/josephwright/siunitx/issues/303))

## [v2.7d] - 2017-02-19

### Fixed
- Avoid doubled tokens in pre-number part of tables

## [v2.7c] - 2017-02-01

### Fixed
- Correct integer alignment in tables (issue [\#302](https://github.com/josephwright/siunitx/issues/302))

## [v2.7b] - 2017-01-28

### Fixed
- Fix an issue with large numbers in scientific mode (issue [\#301](https://github.com/josephwright/siunitx/issues/301))

## [v2.7a] - 2017-01-01

### Changed
- Track `expl3` changes regarding key-value management

## [v2.7] - 2017-01-01

### Added
- Code-level API variable `\l_siunitx_unit_symbolic_seq`

### Fixed
- Allow for `cellspace` package in math mode

## [v2.6s] - 2016-09-02

### Changed

- Improved a warning concerning `color` package

## [v2.6r] - 2016-08-22

### Changed
- Warn if `color` is not loaded (issue [\#289](https://github.com/josephwright/siunitx/issues/289))
- Document some aspects of internal number processing (issue [\#294](https://github.com/josephwright/siunitx/issues/294))
- Minor `expl3` fixes including tracking deprecations

### Fixed
- Handling of `e0` input (issue [\#292](https://github.com/josephwright/siunitx/issues/292))
- Added some missing internal variable declarations

## [v2.6q] - 2016-03-01

### Fixed
- Correct detection of font inside cells

### Changed
- Index formatting

## [v2.6p] - 2016-01-19

### Fixed
- Formatting of `\degreeCelsius` (issue [\#285](https://github.com/josephwright/siunitx/issues/285))
- Allow input unit with prefix and `\per` in `exponent-to-prefix` (issue 283)

## [v2.6o] - 2016-01-05

### Fixed
- Allow for unit powers when converting exponents to prefixes

## [v2.6n] - 2015-12-31

### Changed
- Formatting of `\degreeCelsius` (issue [\#282](https://github.com/josephwright/siunitx/issues/282))

### Fixed
- Appearance of ångström with LuaTeX (issue [\#280](https://github.com/josephwright/siunitx/issues/280))

## [v2.6m] - 2015-10-15

### Fixed
- Interaction with `mwtab` in some table cells

## [v2.6l] - 2015-09-14

### Fixed
- An internal error in literal unit formatting

## [v2.6k] - 2015-09-12

### Changed
- Track/exploit `expl3` updates

## [v2.6j] - 2015-09-01

### Fixed
- Treatment of `\pm` when `exponent-to-prefix` is true
- Print all units when `exponent-to-prefix` is true

## [v2.6i] - 2015-08-18

### Changed
- Performance improvements
- Removed one deprecated `expl3` functions

### Fixed
- Use of `\cancel` in math mode (issue [\#264](https://github.com/josephwright/siunitx/issues/264))
- Cope better with large numbers when rounding (issue [\#198](https://github.com/josephwright/siunitx/issues/198))

## [v2.6h] - 2015-07-17

### Changed
- Track `expl3` changes

## [v2.6g] - 2015-06-25

### Fixed
-  Handling of empty table cells (issue [\#271](https://github.com/josephwright/siunitx/issues/271))

## [v2.6f] - 2015-06-16

### Added
- Spanish coverage for translations

### Changed
- Approach to supporting `mathspec`
- Remove a (probably) misplaced `\scan_stop:`

### Fixed
- Behaviour of `table-sign-exponent` and `table-sign-mantissa` when set
  false

## [v2.6e] - 2015-01-21

### Changed
- Auto-detect `mathspec`/`eulervm`

## [v2.6d] - 2014-10-28

### Fixed
- Fix conversation of uncertainty part with integer mantissas

## [v2.6c] - 2014-10-01

### Fixed
- `\micro` when `fontspec` is loaded

## [v2.6b] - 2014-09-27

### Changed
-  Method for font shape detection to allow for, _e.g._ `\scshape`

### Fixed
- Typo in standard `input-protect-tokens` options

## [v2.6a] - 2014-09-15

### Changed
- Improved Unicode math symbol coverage

## [v2.6] - 2014-09-05

### Changes
- Switch to math mode by default for all printing
- Use `\mathord` before comparators
- Only apply 'tight' spacing to `\mathbin` cases
- Use a 'real' minus with `tex4ht`
- Use a full width space between number and unit (issue [\#230](https://github.com/josephwright/siunitx/issues/230))
- Note that colour for printing powers is set by `power-font` (issue [\#240](https://github.com/josephwright/siunitx/issues/240))
- Use `\mathord` to get 'tight' spacing for signs (issue [\#241](https://github.com/josephwright/siunitx/issues/241))
- Old `repeatunits` option is partly coved by `range-units` (issue [\#254](https://github.com/josephwright/siunitx/issues/254))

### Fixed
- Loading when `mdwtab` is in use
- Appearance of minus sign when `tex4ht` is in use
- Spacing when printing comparators
- Preserve `\fg` in bookmarks (issue [\#226](https://github.com/josephwright/siunitx/issues/226))
- Allow for `output-exponent-marker` option in tables (issue [\#232](https://github.com/josephwright/siunitx/issues/232))
- Conversion of integer with separate uncertainty to 'compact' form
  (issue [\#233](https://github.com/josephwright/siunitx/issues/233))
- Option name wrong in v1 table (issue [\#240](https://github.com/josephwright/siunitx/issues/240))
- Use `\textpm` in text mode if `textcomp` package is loaded (issue [\#249](https://github.com/josephwright/siunitx/issues/249))
- Ignore hard spaces in `\num` (issue [\#256](https://github.com/josephwright/siunitx/issues/256))
- Use `\mathord` for tight spacing on 'in line' exponent (issue [\#257](https://github.com/josephwright/siunitx/issues/257))

## [v2.5s] - 2013-07-31

### Fixed
- Internal issue with one key

## [v2.5r] - 2013-07-11

## Fixed
- Update internals to remove deprecated key support

## [v2.5q] - 2013-03-11

### Changed
- Issue warning if `cellspace` column letter is moved

### Fixed
- Reorder creation of unit wrappers and option setting (issue [\#218](https://github.com/josephwright/siunitx/issues/218))
- Replace active hyphen with 'other' one (issue [\#222](https://github.com/josephwright/siunitx/issues/222))

## [v2.5p] - 2013-02-01

### Fixed
- Search/replace `\pm` and `\mp` in text mode printing

## [v2.5o] - 2013-01-09

### Changed
- Track `expl3` changes

## [v2.5n] - 2012-12-29

### Fixed
- Correctly calculate grouping data to send to `pgf` (issue [\#211](https://github.com/josephwright/siunitx/issues/211))

## [v2.5m] - 2012-11-27

### Fixed
- Allow for `bidi`/RTL when applying `\text`
- Search-and-replace in UTF-8 literal units
- Load binary-units only when requested (issue [\#201](https://github.com/josephwright/siunitx/issues/201))
- Disable `\hightlight` in bookmarks (issue [\#207](https://github.com/josephwright/siunitx/issues/207))

## [v2.5l] - 2012-11-21

### Changed
- Track `expl3` changes

## [v2.5k] - 2012-11-13

### Changed
- Explicitly require `xparse`

### Fixed
- Skip white space after `\begin{document}`
- Correct use of fixed dimension/skip values internally
- Store name of `\frac` function, don't `\let` it (issue [\#203](https://github.com/josephwright/siunitx/issues/203))

## [v2.5j] - 2012-09-18

### Fixed
- Erroneous branch in test for rounding removed (issue [\#202](https://github.com/josephwright/siunitx/issues/202))

## [v2.5i] - 2012-09-11

### Changed
- Internal search for first token in some strings

### Fixed
- Align numbers with no uncertainties correctly when space is reserved
  for uncertainty part

## [v2.5h] - 2012-08-28

### Changed
- Test literal units for being 'blank' not 'empty'

## [v2.5g] - 2012-07-22

### Fixed
- Function of `binary-units` option

## [v2.5f] - 2012-07-16

### Changed
- Track `expl3` changes

## [v2.5e] - 2012-06-13

### Fixed
- An internal error in unit expansion (introduced in v2.4f)

## [v2.5d] - 2012-06-11

### Added
- Extend qualifier system to cover 'phrases'

### Changed
- Extend UTF-8 support (issue [\#199](https://github.com/josephwright/siunitx/issues/199))
- Track `expl3` changes

## [v2.5c] - 2012-05-03

### Fixed
- Detect and skip empty `s`-column cells (issue [\#197](https://github.com/josephwright/siunitx/issues/197))
- Detection of zero input with fixed exponent (issue [\#198](https://github.com/josephwright/siunitx/issues/198))

## [v2.5b] - 2012-04-21

### Fixed
- Detect eulervm package (issue [\#195](https://github.com/josephwright/siunitx/issues/195))
- Search-and-replace for category 'other' "_' and "^" in literal
  units (issue [\#196](https://github.com/josephwright/siunitx/issues/196))

## [v2.5a] - 2012-04-19

### Fixed
- When creating free-standing unit, allow for dynamic nature of
  spacing (bug introduced in v2.5)

## [v2.5] - 2012-04-15

### Added
- Option `zero-decimal-to-integer` (issue [\#178](https://github.com/josephwright/siunitx/issues/178))
- Option to omit uncertainly entirely (issue [\#180](https://github.com/josephwright/siunitx/issues/180))

### Changed
- Reduce use of implicit math mode
- Document that `round-mode = places` acts on the mantissa (issue [\#193](https://github.com/josephwright/siunitx/issues/193))
- Rearrange processing code such that exponents can be dropped (issue [\#192](https://github.com/josephwright/siunitx/issues/192))

### Fixed
- Use a standard-width comparator for tables (issue [\#183](https://github.com/josephwright/siunitx/issues/183))

## [v2.4n] - 2012-04-12

### Changed
- Extend scientific notation code to better handle large numbers of digits

## [v2.4m] - 2012-04-04

### Fixed
- Handling of a single entry in `\SIlist`

## [v2.4l] - 2012-03-23

### Fixed
- Load ordering with `soulpos`

## [v2.4k] - 2012-03-22

### Fixed
- Interaction of `^` and `_` with `breqn` (issue [\#191](https://github.com/josephwright/siunitx/issues/191))
- Adapted `list-pair-separator` for `translator` package (issue [\#190](https://github.com/josephwright/siunitx/issues/190))
- Check for `round-minimum` with large values

## [v2.4j] - 2012-01-26

### Fixed
- Ensure that typesetting is in hmode

## [v2.4i] - 2012-01-19

### Fixed
- Check for zero decimal part (issue [\#186](https://github.com/josephwright/siunitx/issues/186))

## [v2.4h] - 2012-01-15

### Changed
- Shortened an internal code path

### Fixed
- Bug in `reciprocal-positive-first` implementation

## [v2.4g] - 2012-01-06

### Changed
- Internal changes due to update to `expl3` (issue [\#131](https://github.com/josephwright/siunitx/issues/131))

## [v2.4f] - 2011-12-24

### Changed
- Improve performance in an internal mapping
- Use faster data structures internally

### Fixed
- Force font update in table cells
- One incorrect internal variable name

## [v2.4e] - 2011-12-11

### Fixed
- Replacements used with `latin1` encoding

## [v2.4d] - 2011-12-09

### Changed
- Source formatting

### Fixed
- Free-standing units using `xspace` in captions

## [v2.4c] - 2011-12-09

### Fixed
- Test for text mode font

## [v2.4b] - 2011-12-09

### Fixed
- Incorrect doubling of `#` tokens

## [v2.4a] - 2011-12-04

### Changed
- Extend search-and-replace in units to cover UTF-8 symbols
- Symbols used with UTF-8 engines (issue [\#176](https://github.com/josephwright/siunitx/issues/176))

### Fixed
- Interaction of `textcomp` with user symbol changes (issue [\#181](https://github.com/josephwright/siunitx/issues/181))

## [v2.4] -  2012-04-15

### Added
- Option `round-half = even` (issue [\#40](https://github.com/josephwright/siunitx/issues/40))
- Option `list-pair-separator` (issue [\#136](https://github.com/josephwright/siunitx/issues/136))
- Auto-conversion for prefixes (issue [\#173](https://github.com/josephwright/siunitx/issues/173))
- Notes for upgraders

### Changed
- Automatically 'compress' exponents (issue [\#62](https://github.com/josephwright/siunitx/issues/62))
- Clean up internal `expl3` usage
- Removed remaining 'math' options

### Fixed
- Replace minus sign in text mode (issue [\#161](https://github.com/josephwright/siunitx/issues/161))

## [v2.3h] - 2011-10-14

### Changed
- Internal logic improved
- Explicitly load `xfac` as part of documentation

### Fixed
- Select math mode with `tex4ht`  (issue [\#170](https://github.com/josephwright/siunitx/issues/170))
- Print superscripts using HTML tags with `tex4ht` (issue [\#171](https://github.com/josephwright/siunitx/issues/171))

## [v2.3g] - 2011-10-06

### Changed
- Mark-up in documentation

### Fixed
- Check for leading zero when dealing with rounding 'large' exponents
  (issue [\#168](https://github.com/josephwright/siunitx/issues/168))
- Internal issue with undeclared variable

## [v2.3f] - 2011-09-13

### Fixed
- Trap erroneous numbers in tables (issue [\#167](https://github.com/josephwright/siunitx/issues/167))

## [v2.3e] - 2011-09-09

### Added
- Advice on local installation

### Changed
- Remove deprecated `expl3` functions
- Performance improvements

## [v2.3d] - 2011-08-18

### Fixed
- Bad csname for superscripts in literal mode

## [v2.3c] - 2011-08-12

### Fixed
- Use correct `\pm` for units in literal mode (issue [\#163](https://github.com/josephwright/siunitx/issues/163))

## [v2.3b] - 2011-08-08

### Added
- Additional abbreviated units (issue [\#162](https://github.com/josephwright/siunitx/issues/162))

### Fixed
- Definition of abbreviations using option `free-standing-units`

## [v2.3a] - 2011-07-17

### Changed
- Internal `expl3` updates

### Fixed
- Restore changes from v2.2l, missed in v2.3

## [v2.3] - 2011-07-09

### Added
- Supported for powers in literal units (issue [\#152](https://github.com/josephwright/siunitx/issues/152))
- Unit abbreviation `\hl`/`\hL`
- Demo for 'closing up' not after an integer (issue [\#151](https://github.com/josephwright/siunitx/issues/151))

### Changed
- Load binary units as an option
- Used an internal version of `\textsuperscript`
- Internal `expl3` style
- Revised `s`-column printing

###  Deprecated
- Option `load-configurations`

### Fixed
- Behavior of `table-auto-round` option
- Missing deactivation in `strict` option
- Grouping digits (issue [\#133](https://github.com/josephwright/siunitx/issues/133))
- Addition of explicit sign to mantissa (issue [\#139](https://github.com/josephwright/siunitx/issues/139))
- Various issues with tabular alignment

## [v2.2l] - 2011-06-30

### Fixed
- Group pre-unit parsing (issue [\#158](https://github.com/josephwright/siunitx/issues/158))

## [v2.2k] - 2011-06-27

### Fixed
- Avoid `\peek_...` inside the print routine (issue [\#157](https://github.com/josephwright/siunitx/issues/157))

## [v2.2j] - 2011-06-26

### Fixed
- Avoid box for range phrase (issue [\#156](https://github.com/josephwright/siunitx/issues/156))

## [v2.2i] - 2011-06-15

### Fixed
- Detect font in table cells before boxing up (issue [\#153](https://github.com/josephwright/siunitx/issues/153))

## [v2.2h] - 2011-06-03

### Fixed
- Deal correctly with 'roll-over' in rounding integer part (issue [\#150](https://github.com/josephwright/siunitx/issues/150))

## [v2.2g] - 2011-06-02

### Fixed
- Set per-unit options for list/range units when a single unit is used
  (issue [\#149](https://github.com/josephwright/siunitx/issues/149))
- Add test for `parse-numbers = false` to `\tablenum` code

## [v2.2f] - 2011-05-25

### Fixed
- `table-column-width = 0pt` (issue [\#146](https://github.com/josephwright/siunitx/issues/146))

## [v2.2e] - 2011-05-23

### Fixed
- Remove 'mantissa' marker for numbers with no real part (issue [\#145](https://github.com/josephwright/siunitx/issues/145))

## [v2.2d] - 2011-04-28

### Fixed
- The `strict` option (issue [\#143](https://github.com/josephwright/siunitx/issues/143))
- Add `\dots` to protected symbols (issue [\#131](https://github.com/josephwright/siunitx/issues/131))

## [v2.2c] - 2011-04-20

### Fixed
- Bad expansion of toks (issue [\#141](https://github.com/josephwright/siunitx/issues/141))

## [v2.2b] - 2011-04-19

### Fixed
- Bad formatting of negative exponents when using 'E' output
- Internally one argument if `color` is not loaded (issue [\#138](https://github.com/josephwright/siunitx/issues/138))
- Make `\of` expandable in literal contexts (issue [\#137](https://github.com/josephwright/siunitx/issues/137))

## [v2.2a] - 2011-04-16

### Changed
- Make full text for tables, etc., hyperlinks in docs
- Re-arrange docs
- Performance enhancements

### Fixed
- Auto-insertion of "1" when literal mode is on (issue [\#135](https://github.com/josephwright/siunitx/issues/135))
- Detect `\end` macro and print output correctly (issue [\#134](https://github.com/josephwright/siunitx/issues/134))
- Group digits for input containing symbolic entries (issue [\#131](https://github.com/josephwright/siunitx/issues/131))
- Specify a default for `group-digits` (issue [\#130](https://github.com/josephwright/siunitx/issues/130))
- Correctly expand macros with arguments in tables (issue [\#129](https://github.com/josephwright/siunitx/issues/129))
- Ensure that `*` in tabular preamble works correctly with `S`/`s` columns
  (issue [\#128](https://github.com/josephwright/siunitx/issues/128))

## [v2.2] - 2011-04-13

### Added
- `\tablenum` command (issue ##117)
- Parse separated uncertainties (issue [\#57](https://github.com/josephwright/siunitx/issues/57))
- Allow `\cancel` in units (issue [\#4](https://github.com/josephwright/siunitx/issues/4))
- Allow `\highlight` in units
- Option `table-column-width` (issue [\#105](https://github.com/josephwright/siunitx/issues/105))
- Option `bracket-negative-numbers` (issue [\#5](https://github.com/josephwright/siunitx/issues/5))
- Option `table-align-comparators` (issue [\#86](https://github.com/josephwright/siunitx/issues/86))
- Option `minimum-integer-digits` (issue [\#112](https://github.com/josephwright/siunitx/issues/112))
- Option to print exponent marker literally (issue [\#113](https://github.com/josephwright/siunitx/issues/113))
- Support for engineering-style number output (issue [\#114](https://github.com/josephwright/siunitx/issues/114))
- Example of centring a right-aligned column (issue [\#85](https://github.com/josephwright/siunitx/issues/85))
- Various unit abbreviations

### Changed
- Renamed `...-separator` options to `...-product` where appropriate

### Fixed
- Allow `\DeclareSIUnit` to take optional argument (issue [\#121](https://github.com/josephwright/siunitx/issues/121))
- Latent issue with micro symbol when `fontspec` is loaded
- Right-alignment in fixed-width columns
- Print leading `1` when units start `\per` and `per-mode = symbol`
  (issue [\#125](https://github.com/josephwright/siunitx/issues/125))

## [v2.1p] - 2011-04-04

### Fixed
- Two bugs in comparator code

## [v2.1o] - 2011-04-03

### Fixed
- Detect arev package (issue [\#122](https://github.com/josephwright/siunitx/issues/122))
- Allow for negative fixed exponents (issue [\#123](https://github.com/josephwright/siunitx/issues/123))

## [v2.1n] - 2011-03-31

### Fixed
- Rounding to zero significant figures should always give a 0 (issue [\#119](https://github.com/josephwright/siunitx/issues/119))
- `round-integer-to-decimal` when `round-precision = 0`

## [v2.1m] - 2011-03-20

### Added
- `\J` as an abbreviation for `\joule`

### Changed
- Various improvements to documentation
- Avoid expanding units when written to log as 'invalid literals'

### Fixed
- Ensure that some output occurs in when `round-precision = 0` and
  `round-mode = places` (issue [\#111](https://github.com/josephwright/siunitx/issues/111))

## [v2.1l] - 2011-02-10

### Fixed
- A couple of errant 'weight' => 'family' changes

## [v2.1k] - 2011-02-09

### Added
- Option `detect-inine-family`

### Changed
- Use an internal integer for text minus

## [v2.1j] - 2011-02-01

### Fixed
- Check for `\inputencodingname` macro rather than `inputenc` package
  (issue [\#107](https://github.com/josephwright/siunitx/issues/107))

## [v2.1i] - 2011-01-27

### Changed
- New approach for `detect-display-math`

### Fixed
- New approach to `symbol-or-fraction` (issue [\#104](https://github.com/josephwright/siunitx/issues/104))

## [v2.1h] - 2011-01-18

### Changed
- Detect AMS display-like environments

## [v2.1g] - 2010-12-21

### Changed
- Update test for `expl3` and `xparse`

## [v2.1f] - 2010-11-24

### Fixed
- One-letter typo (issue [\#101](https://github.com/josephwright/siunitx/issues/101))

## [v2.1e] - 2010-11-22

### Fixed
- Issue with free-standing unit options (issue [\#99](https://github.com/josephwright/siunitx/issues/99))
- Text mode symbols with `fontspec` (issue [\#98](https://github.com/josephwright/siunitx/issues/98))

## [v2.1d] - 2010-11-14

### Fixed
- Apply options for units when in free-standing mode (issue [\#97](https://github.com/josephwright/siunitx/issues/97))
- Typo in v1 configuration file

## [v2.1c] - 2010-11-14

### Added
- Choice `text` for `qualifier-mode` option (issue [\#95](https://github.com/josephwright/siunitx/issues/95))

### Changed
- Discourage line break between number and unit even when it is permitted
  (issue [\#92](https://github.com/josephwright/siunitx/issues/92))
- Ensure that lists can break across lines
- Restrict range and list functions to text mode
- Auto-detect math mode in tables (issue [\#94](https://github.com/josephwright/siunitx/issues/94))

## [v2.1b] - 2010-11-05

### Changed
- Improve hyphen to minus correction (issue [\#89](https://github.com/josephwright/siunitx/issues/89))

### Fixed
- One wrong variable used (issue [\#90](https://github.com/josephwright/siunitx/issues/90))

## [v2.1a] - 2010-11-05

### Changed
- Internal `expl3` improvements

### Fixed
- Print list separators in text mode (issue [\#87](https://github.com/josephwright/siunitx/issues/87))
- Add in some missing `\ensuremath` statements (issue [\#88](https://github.com/josephwright/siunitx/issues/88))

## [v2.1] - 2010-10-31

### Added
- Option `copy-complex-root` (issue [\#63](https://github.com/josephwright/siunitx/issues/63))
- Option `table-align-exponent` and `table-align-uncertainty` (issue [\#60](https://github.com/josephwright/siunitx/issues/60))
- Option `power-font` (issue [\#69](https://github.com/josephwright/siunitx/issues/69))
- Option `scientific-notation` (issue [\#11](https://github.com/josephwright/siunitx/issues/11))
- Option `round-integer-to-decimal` (issue [\#55](https://github.com/josephwright/siunitx/issues/55))
- Option `input-comparators` (issue [\#16](https://github.com/josephwright/siunitx/issues/16))
- Option `round-minimum` (issue [\#17](https://github.com/josephwright/siunitx/issues/17))

### Changed
- Internal `expl3` improvements

### Fixed
- Correct abbreviation for `\kelvin`
- Bug in conversion code for 'large' numbers to scientific format
- Bug with rounding check if decimal part is empty
- Remove decimal marker if rounding gives an empty decimal part

## [v2.0y] - 2010-10-11

### Fixed
- Bug with `tight-spacing` option

## [v2.0x] - 2010-10-05

### Fixed
- Make single-prefix detection work with non-symbolic prefixes
  (issue [\#81](https://github.com/josephwright/siunitx/issues/81))

## [v2.0w] - 2010-09-29

### Fixed
- Problem with REVTeX and S columns (issue [\#80](https://github.com/josephwright/siunitx/issues/80))

## [v2.0v] - 2010-09-26

### Changed
- Track `expl3` changes

## [v2.0u] - 2010-09-14

### Fixed
- Issue with `textpos` (issue [\#74](https://github.com/josephwright/siunitx/issues/74))
- Prevent infinite loop when using `\SI{}{...}` (issue [\#78](https://github.com/josephwright/siunitx/issues/78))

## [v2.0t] - 2010-08-24

### Fixed
- Correct `\exp_after:wN` (issue [\#77](https://github.com/josephwright/siunitx/issues/77))

## [v2.0s] - 2010-08-12

### Added
- Demo for headers in tables

### Fixed
- Bug in rounding code for zero decimal place (issue [\#76](https://github.com/josephwright/siunitx/issues/76))

## [v2.0r] - 2010-08-02

### Fixed
- Bug in v1 `decimalsymbol` emulation

## [v2.0q] - 2010-07-29

### Fixed
- Errors with free-standing units

## [v2.0p] - 2010-07-28

### Fixed
- Shape detection

## [v2.0o] - 2010-07-22

### Added
- Extend detect-italic to slanted shape (issue [\#73](https://github.com/josephwright/siunitx/issues/73))

## [v2.0n] - 2010-07-15

### Added
- Various abbreviations

### Changed
- Documentation section on tables where rows have different units

## [v2.0m] - 2010-07-09

### Added
- Option `locale` and notes on use with `babel`

## [v2.0l] - 2010-07-07

### Changed
- Updated documentation for v1 options

### Fixed
- Move test for `\fg` so that it works independent of `babel` load order

## [v2.0k] - 2010-07-04

### Fixed
- Issue with `babel` (issue [\#68](https://github.com/josephwright/siunitx/issues/68))

## [v2.0j] - 2010-06-30

### Changed
- Force `input-symbols` to print in math mode

### Fixed
- Correct appearance of `\hartree`

## [v2.0i] - 2010-06-29

### Fixed
-  Two missed `_` from `expl3` style switch (issue [\#67](https://github.com/josephwright/siunitx/issues/67))

## [v2.0h] - 2010-06-29

### Fixed
- Issue with localisation

## [v2.0g] - 2010-06-28

### Added
- First approach to localisation (issue [\#61](https://github.com/josephwright/siunitx/issues/61))
- Restore 'bracket-numbers' option (issue [\#65](https://github.com/josephwright/siunitx/issues/65))

### Changed
- Alter complex root output so that it always resets the math font

### Fixed
- Bracket complex numbers in numerator of quotient (issue [\#66](https://github.com/josephwright/siunitx/issues/66))

## [v2.0f] - 2010-06-27

### Fixed
- Spacing with `\times` in text mode (issue [\#64](https://github.com/josephwright/siunitx/issues/64))

## [v2.0e] - 2010-06-20

### Fixed
- Move save/restore of `\pm` (issue [\#58](https://github.com/josephwright/siunitx/issues/58))

## [v2.0d] - 2010-06-10

### Changed
- Document use of `\cr` in tables (issue [\#53](https://github.com/josephwright/siunitx/issues/53))
- Internal `expl3` improvements

### Fixed
- `table-exponent` option's handling of exponent signs (issue [\#56](https://github.com/josephwright/siunitx/issues/56))

## [v2.0c] - 2010-06-07

### Changed
- Improve emulation of v1 material
- Performance improvements
- Internal `expl3` improvements
- Move `\requiresiconfigs` to v1 file

### Fixed
- Test for bottoming-out units and ensure that any 'hidden' literal units
  print (issue [\#50](https://github.com/josephwright/siunitx/issues/50))

## [v2.0b] - 2010-06-01

### Added
- Complete emulation of v1 options

## [v2.0a] - 2010-05-28

### Changed
- Allow `\SendSettingsToPgf` in the document body
- Several improvements in v1 emulation

### Fixed
- Allow `\newunit` to take optional arguments (issue [\#45](https://github.com/josephwright/siunitx/issues/45))

## v2.0

### Added
- Complete re-write of package to add many new features

## v1.0

### Added
- First official release

## v0.6

### Added
- First public testing release (as `si`)

[Unreleased]: https://github.com/josephwright/siunitx/compare/v3.3.4...HEAD
[v3.3.4]: https://github.com/josephwright/siunitx/compare/v3.3.3...v3.3.4
[v3.3.3]: https://github.com/josephwright/siunitx/compare/v3.3.2...v3.3.3
[v3.3.2]: https://github.com/josephwright/siunitx/compare/v3.3.1...v3.3.2
[v3.3.1]: https://github.com/josephwright/siunitx/compare/v3.3.0...v3.3.1
[v3.3.0]: https://github.com/josephwright/siunitx/compare/v3.2.9...v3.3.0
[v3.2.9]: https://github.com/josephwright/siunitx/compare/v3.2.8...v3.2.9
[v3.2.8]: https://github.com/josephwright/siunitx/compare/v3.2.7...v3.2.8
[v3.2.7]: https://github.com/josephwright/siunitx/compare/v3.2.6...v3.2.7
[v3.2.6]: https://github.com/josephwright/siunitx/compare/v3.2.5...v3.2.6
[v3.2.5]: https://github.com/josephwright/siunitx/compare/v3.2.4...v3.2.5
[v3.2.4]: https://github.com/josephwright/siunitx/compare/v3.2.3...v3.2.4
[v3.2.3]: https://github.com/josephwright/siunitx/compare/v3.2.2...v3.2.3
[v3.2.2]: https://github.com/josephwright/siunitx/compare/v3.2.1...v3.2.2
[v3.2.1]: https://github.com/josephwright/siunitx/compare/v3.2.0...v3.2.1
[v3.2.0]: https://github.com/josephwright/siunitx/compare/v3.1.11...v3.2.0
[v3.1.11]: https://github.com/josephwright/siunitx/compare/v3.1.10...v3.1.11
[v3.1.10]: https://github.com/josephwright/siunitx/compare/v3.1.9...v3.1.10
[v3.1.9]: https://github.com/josephwright/siunitx/compare/v3.1.8...v3.1.9
[v3.1.8]: https://github.com/josephwright/siunitx/compare/v3.1.7...v3.1.8
[v3.1.7]: https://github.com/josephwright/siunitx/compare/v3.1.6...v3.1.7
[v3.1.6]: https://github.com/josephwright/siunitx/compare/v3.1.5...v3.1.6
[v3.1.5]: https://github.com/josephwright/siunitx/compare/v3.1.4...v3.1.5
[v3.1.4]: https://github.com/josephwright/siunitx/compare/v3.1.3...v3.1.4
[v3.1.3]: https://github.com/josephwright/siunitx/compare/v3.1.2...v3.1.3
[v3.1.2]: https://github.com/josephwright/siunitx/compare/v3.1.1...v3.1.2
[v3.1.1]: https://github.com/josephwright/siunitx/compare/v3.1.0...v3.1.1
[v3.1.0]: https://github.com/josephwright/siunitx/compare/v3.0.50...v3.1.0
[v3.0.50]: https://github.com/josephwright/siunitx/compare/v3.0.49...v3.0.50
[v3.0.49]: https://github.com/josephwright/siunitx/compare/v3.0.48...v3.0.49
[v3.0.48]: https://github.com/josephwright/siunitx/compare/v3.0.47...v3.0.48
[v3.0.47]: https://github.com/josephwright/siunitx/compare/v3.0.46...v3.0.47
[v3.0.46]: https://github.com/josephwright/siunitx/compare/v3.0.45...v3.0.46
[v3.0.45]: https://github.com/josephwright/siunitx/compare/v3.0.44...v3.0.45
[v3.0.44]: https://github.com/josephwright/siunitx/compare/v3.0.43...v3.0.44
[v3.0.43]: https://github.com/josephwright/siunitx/compare/v3.0.42...v3.0.43
[v3.0.42]: https://github.com/josephwright/siunitx/compare/v3.0.41...v3.0.42
[v3.0.41]: https://github.com/josephwright/siunitx/compare/v3.0.40...v3.0.41
[v3.0.40]: https://github.com/josephwright/siunitx/compare/v3.0.39...v3.0.40
[v3.0.39]: https://github.com/josephwright/siunitx/compare/v3.0.38...v3.0.39
[v3.0.38]: https://github.com/josephwright/siunitx/compare/v3.0.37...v3.0.38
[v3.0.37]: https://github.com/josephwright/siunitx/compare/v3.0.36...v3.0.37
[v3.0.36]: https://github.com/josephwright/siunitx/compare/v3.0.35...v3.0.36
[v3.0.35]: https://github.com/josephwright/siunitx/compare/v3.0.34...v3.0.35
[v3.0.34]: https://github.com/josephwright/siunitx/compare/v3.0.33...v3.0.34
[v3.0.33]: https://github.com/josephwright/siunitx/compare/v3.0.32...v3.0.33
[v3.0.32]: https://github.com/josephwright/siunitx/compare/v3.0.31...v3.0.32
[v3.0.31]: https://github.com/josephwright/siunitx/compare/v3.0.30...v3.0.31
[v3.0.30]: https://github.com/josephwright/siunitx/compare/v3.0.29...v3.0.30
[v3.0.29]: https://github.com/josephwright/siunitx/compare/v3.0.28...v3.0.29
[v3.0.28]: https://github.com/josephwright/siunitx/compare/v3.0.27...v3.0.28
[v3.0.27]: https://github.com/josephwright/siunitx/compare/v3.0.26...v3.0.27
[v3.0.26]: https://github.com/josephwright/siunitx/compare/v3.0.25...v3.0.26
[v3.0.25]: https://github.com/josephwright/siunitx/compare/v3.0.24...v3.0.25
[v3.0.24]: https://github.com/josephwright/siunitx/compare/v3.0.23...v3.0.24
[v3.0.23]: https://github.com/josephwright/siunitx/compare/v3.0.22...v3.0.23
[v3.0.22]: https://github.com/josephwright/siunitx/compare/v3.0.21...v3.0.22
[v3.0.21]: https://github.com/josephwright/siunitx/compare/v3.0.20...v3.0.21
[v3.0.20]: https://github.com/josephwright/siunitx/compare/v3.0.19...v3.0.20
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