The pulldown_cmark escaping functionality is now shipped in a separate
pulldown_cmark_escape crate
(https://crates.io/crates/pulldown-cmark-escape), starting with v0.10.0.
The markdown.rs module has to be adapted to a few API changes in
pulldown_cmark, and we have to introduce explicit handling of <img> alt
text to ensure it continues to be properly escaped.
There are also a few other behavior changes that are caught by the
tests, but these actually seem to be desired, so I've updated the insta
snapshot files for those tests to incorporate those changes.
Specifically, one footnote-parsing case seems to be handled better now,
and pulldown-cmark's `push_html` now doesn't escape quotes in text nodes
anymore (see https://github.com/pulldown-cmark/pulldown-cmark/pull/836).
* add external_level and internal_level
* remove unnecessary debug derive on LinkDef
* clarify doc comment about link check levels
* simplify link checker logging
* add missing warn prefix
* simplify link level logging, remove "Level" from linklevel variants
* remove link level config from test site
* switch back to using bail! from get_link_domain
* move console's deps to libs
* remove unnecessary reference
* calling console::error/warn directly
* emit one error, or one warning, per link checker run
* various link checker level changes
* add docs about link checker levels
* remove accidentally committed test site
* remove completed TODO
