- updated SSF to 0.9.2
- XLSB style records and number format writing
- CSV avoid parseFloat (fixes #646 h/t @jabbermarky)
- CSV recognize mac line ending (fixes #648 h/t @charlesread)
- BIFF2 format table refactored to align with SSF
- BIFF5 image data exposure
- SSF custom format auto table update (fixes #267 h/t @Fangmingdu)
- eslint more checks
- browser test timeout extended to 10 seconds

- dateNF parse option controls interpretation of code 14
- SSF updated to 0.9.1
- SYLK write formulae
- DIF support Excel-style data storage
- ODS/FODS automatic styles for date formatting

Issues:
- Fixes #181 h/t @CharlesNo
- Fixes #200 h/t @JohnJeong123
- Fixes #208 h/t @jerryhe88
- Fixes #262 h/t @JohnJeong123
- Fixes #269 h/t @calebeaires
- Fixes #326 h/t @railty
- Fixes #392 h/t @FourLeafClover
- Fixes #449 h/t @dougschiller
- Fixes #560 h/t @dpackage

- XLSX/XLSB/XLS/XLML/SYLK rows and columns
- corrected pixel/point calculations using PPI
- XLSX/XLSB generate sheet view
- clarified sheet protection default behavior
- fixed eslintrc semi check

- eslint pass (eliminates jshint and jscs)
- moved cell reference functions to reduce forward references
- themeXLSX override XLSX/XLSB/XLSM theme