[Chapel Merge] Use custom pygments lexer

Branch: refs/heads/master
Revision: 10ed3f6
Author: e-kayrakli
Log Message:

Merge pull request #40 from e-kayrakli/pygments-use-custom-lexer

Use custom pygments lexer

This PR adds a custom pygments lexer and uses it. Currently this lexer is just a copy of what we have in pygments 2.7.2.

Partially resolves https://github.com/chapel-lang/chapel/issues/14623
Supersedes https://github.com/chapel-lang/chapel/pull/16557

[Reviewed by @lydia-duncan and @ben-albrecht]

Modified Files:
A sphinxcontrib/chapeldomain/LICENSE
A sphinxcontrib/chapeldomain/README.md
A sphinxcontrib/chapeldomain/chapel.py
M sphinxcontrib/chapeldomain/init.py

Compare: https://github.com/chapel-lang/sphinxcontrib-chapeldomain/compare/8033dc268185...10ed3f6e0353