myst-parser 0.4.0

Upgrade to `mistletoe-ebp~=0.9.2`

on Python PyPI

mistletoe-ebp v0.9 introduces a major API improvement, particularly for block tokens (how they are parsed/stored) and capture of source positions. This allows the majority of the code in myst_parser/block_tokens.py to be removed, in favour of the upstream implementations.

Breaking changes:

• range field renamed to position
• ASTRenderer renamed to JsonRenderer
• FrontMatter is stored as an attribute of Document (rather than a child)
• source text is now parsed by Document.read(text), instead of Document(text) (@choldgraf this will need to be changed in MyST-NB)