Katex

Added
- Added `\atop`, `\bmod`, `\degree`, `\kern`, `\ldots`, `\maltese`, `\mathbin`, `\mathclose`, `\mathellipsis`, `\mathop`, `\mathopen`, `\mathord`, `\mathpunct`, `\mathrel`, `\middle`, `\mod`, `\pod`, `\pounds`, `\pmod`, `\stackre`, `\textbf`, `\textellipsis`, `\textit`, `\textnormal`, `\textrm`, `\textsf`, `\texttt`, `--`, `---`, `'''`, `'`, `` ``​ and `""`.
- Added `\`, `\&`, `\$`, `\%`, `\_`, `\{`, and `\}` in text mode.

Changed
- Allow specifying macros (without arguments) in the settings object.
- Combine adjacent spans in text mode.

Fixed
- Do not apply italic correction in text mode.
- Fixed the MathML fence attribute on delimiters.
- Fixed converting bins to ords.
- Made `\llap` and `\rlap` produce ords.
- Fixed spacing around `\color`, `\mathbf`, and in other places.
- Added per-style font metrics.
- Complain when trying to render a non-string.
- Fixed subscript positioning with changed-font bases.
- Fixed superscript/subscript centering in fractions.

Added
- Added `\gt`, `\lt` and `\underline` support.
- Introduced the aligned environment.

Removed
- Removed 3px border around rules.

Changed
- Bundle CSS and fonts in npm package.

Fixed
- Fixed sub- and super-scripts not being centered inside of math display.
- Set the greediness of font functions to 2 so that `e^\mathbf{x}` will parse.

Added
- Added the font changing functions `\mathrm`, `\mathit`, `\mathbf`, `\mathbb`, `\mathcal`, `\mathfrak`, `\mathscr`, `\mathsf`, `\mathtt`, `\Bbb`, `\bold`, and `\frak`.
- Added the `\limits` and `\nolimits` functions.
- Added a throwOnError option to allow generating red error text when rendering invalid commands instead of throwing errors, and a corresponding errorColor option to decide the color of invalid commands.
- Added support for `|` column delimiters in the array environment.
- Added `\lVert` and `\rVert` symbols.

Changed
- Allow `\lvert`, `\rvert`, `\lVert`, `\rVert`, `\lgroup`, `\rgroup`, `\lmoustache`, and `\rmoustache` in delimiters.

Fixed
- Fix the spacing of the `\ulcorner`, `\urcorner`, `\llcorner`, `\lrcorner`, `\barwedge`, `\veebar`, `\circledcirc`, `\boxdot`, `\uparrow`, `\Uparrow`, `\downarrow`, `\Downarrow`, `\updownarrow`, `\Updownarrow`, and `\ldots` symbols.

Added
- Added the cases and Bmatrix environments.
- Added `\checkmark` and `\circledR` symbols.

Changed
- Ran `ttfautohint` on our fonts to produce better results at small font sizes.
- Improved the spacing inside fractions.
- Correctly set environments to the ord type.

Fixed
- Fixed bower.json to include a "main" entry

Added
- Added support for some `\begin`/`\end` environments, including support for `array`, `matrix`, `pmatrix`, `bmatrix`, `vmatrix`, and `Vmatrix`.
- Added support for optional `\sqrt` arguments, e.g. `\sqrt[3]{x}`.
- Bower package is now available: run `bower install katex` to download the built files.


Changed
- Added a display mode flag to the cli.
- Exposed an unstable `__parse` method for retrieving the parse tree.
- Prevent elements from inheriting `text-indent`.