- chartsheets are now stored as sheets with "!type" set to "chart"
- fixed Strict XML Workbook Relationships
- stubbed support for dialog and macro sheets
- removed legacy XLS `!range` field
- read and write support for Flat ODS files
- read support for Uniform Office Spreadsheet (UOS)
- IE6-8 cell regex split fix (fixes#350#140#268 h/t @Aymkdn @C0d3ine)
- replace substr negative index with slices (fixes#351 h/t @Aymkdn)
- ODS parsexmltag ignores ext overrides (fixes#548 h/t @lgodard)
- csv can be written using write/writeFile with csv type
- added `type` to README (fixes#432 h/t @tomkel)
- 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)
