Markdown-aafigure

- Add support for blocks with extra backticks

- Fix related to [14](https://gitlab.com/mbarkhau/markdown-katex/-/issues/14): Since `Markdown>=3.3` support for [Markdown in HTML][md_in_html] was broken.

[md_in_html]: https://python-markdown.github.io/extensions/md_in_html/

- Fix: Ignore trailing whitespace after closing fence.

- Fix: Bad image substitution when markdown has multiple diagrams

- Fix: don't require typing package for py<35

- Add: Support for inline svg
- Add: `tag_type` option for better control of embedding
- Depricated: `format` parameter