version bump 0.13.1: SST optimization

- XLSX / XLSB avoid linear scan when emitting SST
- minor nits

version bump 0.13.0: AMD support

- library reshaped to support requirejs / amd without shim
- control comment visibility (fixes SheetJS#998, h/t @cmuruganmsc)
- fixed README code sample error (fixes SheetJS#1118 h/t @iahmedani)

version bump 0.12.13: sylk niggles

- sylk column-major order support
- third-party extensions in SST
- `string` type codepage

version bump 0.12.12: ecosystem deprecations

- node 10 `Buffer` deprecation workaround (with dependency update)
- Angular 6 global deprecation workaround (fixes SheetJS#1088 h/t @cristhiank)
- BIFF8 write standard and custom properties
- TH elements in HTML string (fixes SheetJS#1090 h/t @GigiSan)
- planmaker export quirks

version bump 0.12.11: file format range limits

version bump 0.12.10: sheet_to_json niggle

- default not treated as value for empty rows (fixes SheetJS#1078 h/t @cemremengu)

version bump 0.12.9: XLSX/XLSB abnormal paths

- support for arbitrary subfile paths in OPC
- updated CFB to 1.0.6

version bump 0.12.8: sheetRows multiformat support

- all formats accept `sheetRows` option (fixes SheetJS#1062 h/t @prog666)
- `table_to_*` support for `sheetRows`
- demo cleanup

version bump 0.12.7: chrome extension

- `writeFile` support chrome extension (fixes SheetJS#1051 h/t @atkinsam)
- demo refresh

version bump 0.12.6: BrtUid

- `BrtUid` record (fixes SheetJS#1044 h/t @gustavosimil)
- `sheet_to_json` allow default for errors (fixes SheetJS#1035 h/t @arijitkanrar)
- docs and demos update