- blank cells are omitted or stubbed (fixes#770 h/t @doxma)
- bare equals signs are interpred as strings
- CSV / TSV determination based on frequency (fixes#732 h/t @nknapp)
- HTML DOM Element and CSV tests
- XLS do not leak XF and index (fixes#782 h/t @the-spyke)
- cellText and cellNF apply to CSV (fixes#781 h/t @the-spyke)
- 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)
