- codepage updated to 1.6.0 (latest)
- clean up Makefile
- adapted .travis.yml to support 0.8
- removed test files that drifted from baseline
- removed XLSB pseudo-inverse tests due to fails in node 4+
- more structure in the theme parsing
- cellDates option on parsing side creates date cells
- cellDates option on writing side creates cells with type 'd'
- cell types clarified, type 'str' phased out
- README clarifications
- more tests to ensure date consistency
- more test cases for ODS