Bump pulldown-cmark from 0.8.0 to 0.9.1

[dependabot[bot]]

Bumps pulldown-cmark from 0.8.0 to 0.9.1.

Release notes

Sourced from pulldown-cmark's releases.

0.9.1

Fixes minor parsing bug in nested lists.

0.9.0

This release brings a number of changes.

New features

• Thanks to @​lo48576, pulldown now optionally supports custom header ids and classes for headers. Set ENABLE_HEADING_ATTRIBUTES in the options to enable.
• Users can now access reference definitions, information that was previously only exposed internally.
• Pulldown is now CommonMark 0.30 compliant.

Changes

• The function signature for the broken link callback has changed slightly to allow for FnMut functions.

There have also been a number of (small) parsing bug fixes.

Commits

• 113e54e Bump version to 0.9.1
• 7c6b049 Fix bug where we didn't let + lists break paragraphs
• 9740413 Actually set options
• a7087db Fuzz options too
• 8d14396 Add fuzzer that just parses &str input
• 60d3656 Fix index out of bounds error in code span parsing
• fba26ff Bump version in readme.md
• 8ef2668 Fixup some clippy warnings
• 967dd38 Bump MSRV
• 6ccec87 Update dependencies; update specs; bump version to 0.9.0
• Additional commits viewable in compare view

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