Adrien Loison c74c0d9127 Add support for 1904 dates ...

This commit adds support for dates using the 1904 calendar (starting 1904-01-01 00:00:00).
It also fixes some issues with the dates in 1900 calendar (which now correctly start at 1899-12-30 00:00:00).
Finally, it is now possible to have negative timestamps, representing dates before the base date (and up to 0000-01-01 00:00:00), as per the SpreadsheetML specs. Note that some versions of Excel don't support negative dates...

2017-11-04 16:33:46 +01:00

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csv

Option to keep empty rows (#331)

2016-10-17 10:20:02 -07:00

ods

Expose Sheet::isActive() to provide info about the last active sheet (#405)

2017-04-15 21:40:19 +02:00

xlsx

Add support for 1904 dates

2017-11-04 16:33:46 +01:00