Merge pull request #1001 from adamtheturtle/pyup-update-pygments-2.3.1-to-2.4.0

Update pygments to 2.4.0

Author: adamtheturtle

dev-requirements.txt

@@ -13,7 +13,7 @@ pip_check_reqs==2.0.3
 pydocstyle==3.0.0  # Lint docstrings
 pyenchant==2.0.0  # Bindings for a spellchecking sytem
 pygithub==1.43.7
-Pygments==2.3.1
+Pygments==2.4.0
 pylint==2.3.1  # Lint
 pyroma==2.4  # Packaging best practices checker
 pytest-cov==2.7.1  # Measure code coverage