- option bookFiles controls whether zip files and keys are written to object
*** Default has been flipped from "true" to "false"
- updated SSF to 0.5.8
- updated test_files to 20140216 (tests also look at 2013 XLSB)
- added dist files (make dist)
- merged test repo with xls
- travis integration
- shifted to Apache 2.0 LICENSE
- mocha tests
The shift to Apache 2.0 was long overdue. It's becoming clear that compliance
requires deeper integration with the xls libraries and other implementations
whose specifications are covered under the OSP. It was a grave oversight for
the ISO and ECMA people to not try to implement parsers themselves, for if they
did I suspect the outcome would have been much different
