Release v0.37.0

Added

• Speed up sanitization with a fused transform and optimized regex matching. Switching from imperative style sanitization to one based on transforms is 20% slower. We believe it's worth it because of the improved reviewability of the code.

Changed

• BREAKING: Sanitization now happens during parsing/construction instead of at serialization time. The the safe and policy keywords move from to_html to the JustHTML constructor. Before: JustHTML(...).to_html(safe=..., policy=...), After: JustHTML(safe=..., policy=...).to_html().

Docs

• Update documentation to reflect sanitize-at-construction behavior.
• Add CLI documentation for --allow-tags.
• Add a transforms example and refresh performance benchmark snippet in README.
• Clarify lxml sanitization guidance in README.