Log Message:
py-markdown2: updated to 2.5.0

python-markdown2 2.5.0

- Add support for custom extras
- Drop Python 3.5 support
- Add `prepend` arg to toc extra
- Process HTML comments as markdown in 'escape' safe mode
- Fix syntax warnings in test suite
- Process inline tags as HTML blocks when they span multiple lines
- Add new LaTeX Extra
- Fix `html`, `head` and `body` tags being wrapped in `<p>` tags
- Graceful handling of broken lists when cuddled-lists extra is enabled
- Add type hints
- Drop Python 3.6 and 3.7 support
- Fix fenced code blocks breaking lists
- Fix 583 by tweaking incomplete tag regex
- Fix AssertionError on malformed HTML