v2.100.0

Feature

• Lenient escape repair on doclang deserialization (#803) (367ed14)
• doclang: Add include_namespace & image_mode options to export & archive saving (#809) (eac575a)

Fix

• vtt: Carry millisecond rounding across second/minute/hour boundaries (#829) (c44fcf8)
• serializer: Render relative hyperlinks with portable separators (#780) (cff563f)
• Support "application/rtf" MIME type in document validation (#827) (3e42dba)
• doclang: Keep the nested content of float footnotes and captions (#824) (d7cef4c)
• doclang: Fix deserialization of without element body (#811) (01c2443)
• doclang: Don't replay parent children for empty list item bodies (#820) (bb89daa)
• doclang: Keep label, provenance, layer and leading text of mixed-content elements (#804) (39aec16)
• Renumber all items on deletion; add opt-in validation rules and repairs (#810) (61ab797)
• markdown: Keep non-ASCII list markers in AUTO mode (#799) (25ade75)

Performance

• chunking: Make _split_by_doc_items linear in the number of doc items (#808) (e551f14)
• Stop building a throwaway serializer for every rich table cell (#771) (ed78fd3)