Update pygments to 2.6.1

[pyup-bot]

This PR updates pygments from 2.4.2 to 2.6.1.

Changelog

2.6

-----------
(released March 8, 2020)

- Running Pygments on Python 2.x is no longer supported.
(The Python 2 lexer still exists.)

- Added lexers:

* Linux kernel logs (PR1310)
* LLVM MIR (PR1361)
* MiniScript (PR1397)
* Mosel (PR1287, PR1326)
* Parsing Expression Grammar (PR1336)
* ReasonML (PR1386)
* Ride (PR1319, PR1321)
* Sieve (PR1257)
* USD (PR1290)
* WebIDL (PR1309)

- Updated lexers:

* Apache2 (PR1378)
* Chapel (PR1357)
* CSound (PR1383)
* D (PR1375, PR1362)
* Idris (PR1360)
* Perl6/Raku lexer (PR1344)
* Python3 (PR1382, PR1385)
* Rust: Updated lexer to cover more builtins (mostly macros) and miscellaneous
new syntax (PR1320)
* SQL: Add temporal support keywords (PR1402)

- The 256-color/true-color terminal formatters now support the italic attribute
in styles (PR1288)
- Support HTTP 2/3 header (PR1308)
- Support missing reason in HTTP header (PR1322)
- Boogie/Silver: support line continuations and triggers, move contract keywords
to separate category (PR1299)
- GAS: support C-style comments (PR1291)
- Fix names in S lexer (PR1330, PR1333)
- Fix numeric literals in Ada (PR1334)
- Recognize ``.mjs`` files as Javascript (PR1392)
- Recognize ``.eex`` files as Elixir (PR1387)
- Fix ``re.MULTILINE`` usage (PR1388)
- Recognize ``pipenv`` and ``poetry`` dependency & lock files (PR1376)
- Improve font search on Windows (1247)
- Remove unused script block (1401)

2.5.2

-------------
(released November 29, 2019)

- Fix incompatibility with some setuptools versions (PR1316)

- Fix lexing of ReST field lists (PR1279)
- Fix lexing of Matlab keywords as field names (PR1282)
- Recognize double-quoted strings in Matlab (PR1278)
- Avoid slow backtracking in Vim lexer (PR1312)
- Fix Scala highlighting of types (PR1315)
- Highlight field lists more consistently in ReST (PR1279)
- Fix highlighting Matlab keywords in field names (PR1282)
- Recognize Matlab double quoted strings (PR1278)
- Add some Terraform keywords
- Update Modelica lexer to 3.4
- Update Crystal examples

2.5.1

-------------
(released November 26, 2019)

- This release fixes a packaging issue. No functional changes.

2.5.0

-------------
(released November 26, 2019)

- Added lexers:

* Email (PR1246)
* Erlang, Elixir shells (PR823, 1521)
* Notmuch (PR1264)
* `Scdoc <https://git.sr.ht/~sircmpwn/scdoc>`_ (PR1268)
* `Solidity <https://solidity.readthedocs.io/>`_ (1214)
* `Zeek <https://www.zeek.org>`_ (new name for Bro) (PR1269)
* `Zig <https://ziglang.org/>`_ (PR820)

- Updated lexers:

* Apache2 Configuration (PR1251)
* Bash sessions (1253)
* CSound (PR1250)
* Dart
* Dockerfile
* Emacs Lisp
* Handlebars (PR773)
* Java (1101, 987)
* Logtalk (PR1261)
* Matlab (PR1271)
* Praat (PR1277)
* Python3 (PR1255, PR1400)
* Ruby
* YAML (1528)
* Velocity

- Added styles:

* Inkpot (PR1276)

- The ``PythonLexer`` class is now an alias for the former ``Python3Lexer``.
The old ``PythonLexer`` is available as ``Python2Lexer``.  Same change has
been done for the ``PythonTracebackLexer``.  The ``python3`` option for
the ``PythonConsoleLexer`` is now true by default.

- Bump ``NasmLexer`` priority over ``TasmLexer`` for ``.asm`` files
(fixes 1326)
- Default font in the ``ImageFormatter`` has been updated (928, PR1245)
- Test suite switched to py.test, removed nose dependency (1490)
- Reduce ``TeraTerm`` lexer score -- it used to match nearly all languages
(1256)
- Treat ``Skylark``/``Starlark`` files as Python files (PR1259)
- Image formatter: actually respect ``line_number_separator`` option

- Add LICENSE file to wheel builds
- Agda: fix lambda highlighting
- Dart: support ` annotations
- Dockerfile: accept ``FROM ... AS`` syntax
- Emacs Lisp: add more string functions
- GAS: accept registers in directive arguments
- Java: make structural punctuation (braces, parens, colon, comma) ``Punctuation``, not ``Operator`` (987)
- Java: support ``var`` contextual keyword (1101)
- Matlab: Fix recognition of ``function`` keyword (PR1271)
- Python: recognize ``.jy`` filenames (976)
- Python: recognize ``f`` string prefix (1156)
- Ruby: support squiggly heredocs
- Shell sessions: recognize Virtualenv prompt (PR1266)
- Velocity: support silent reference syntax

Links

• PyPI: https://pypi.org/project/pygments
• Changelog: https://pyup.io/changelogs/pygments/
• Homepage: https://pygments.org/

[pyup-bot]

Closing this in favor of #188