- opts.sheetRows limits parsing; default (0) parses all rows
- added -n mode to xlsx2csv to control number of rows
- !ref will be adjusted; !fullref holds full range
- 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)
- opts.bookDeps parses calc chain; now chains are not parsed by default
- getzipdata safe option obviates some try-catch blocks
- parsing cell type 'd' (h/t @malphettes, yet again :)
- opts.WTF throws on errors
- cellHTML controls HTML generation
- cellFormula controls formula output
- sheetStubs now defaults to false
- cleaned up unnecessary CSV quotes (fixed#45)
- updated test_files to 20140211
- updated SSF to 0.5.7
- removed unused main function
- removed some dead code
