Update pygments to 2.2.0

[pyup-bot]

There's a new version of pygments available.
You are currently using 2.1.3. I have updated it to 2.2.0

These links might come in handy: PyPI | Changelog | Homepage

Changelog

2.2

---

(in development)

• Added lexers:

• AMPL
• TypoScript (1173)
• Varnish config (PR554)
• Clean (PR503)
• WDiff (PR513)
• Flatline (PR551)
• Silver (PR537)
• HSAIL (PR518)
• JSGF (PR546)
• NCAR command language (PR536)
• Extempore (PR530)
• Cap'n Proto (PR595)
• Whiley (PR573)
• Monte (PR592)
• Crystal (PR576)
• Snowball (PR589)
• CapDL (PR579)
• NuSMV (PR564)
• SAS, Stata (PR593)

• Added the ability to load lexer and formatter classes directly from files
  with the -x command line option and the lexers.load_lexer_from_file()
  and formatters.load_formatter_from_file() functions. (PR559)

• Added lexers.find_lexer_class_by_name(). (1203)

• Added new token types and lexing for magic methods and variables in Python
  and PHP.

• Added a new token type for string affixes and lexing for them in Python, C++
  and Postgresql lexers.

• Added a new token type for heredoc (and similar) string delimiters and
  lexing for them in C++, Perl, PHP, Postgresql and Ruby lexers.

• Styles can now define colors with ANSI colors for use in the 256-color
  terminal formatter. (PR531)

• Improved the CSS lexer. (1083, 1130)

• Added "Rainbow Dash" style. (PR623)

• Delay loading pkg_resources, which takes a long while to import. (PR690)

Got merge conflicts? Close this PR and delete the branch. I'll create a new PR for you.

Happy merging! 🤖