- BIFF 2-12 formula parsing
- more content type coverage
- unified `.f` form: A1-style string
- `.F` field for array formulae
- formula output groups array formulae
- bin script -A --arrays output JS row objects
- whitespace robustness in inline string xml
- UTF-8 parsing in rich text runs (fixes#505 h/t @fuchsc)
- bold/italic/underline accept null val attr (h/t @qqilihq)
- sst trimming (fixes#176 h/t @shakhal @oising)
- more structure in the theme parsing
- cellDates option on parsing side creates date cells
- cellDates option on writing side creates cells with type 'd'
- cell types clarified, type 'str' phased out
- README clarifications
- more tests to ensure date consistency
- more test cases for ODS