Worksheet autofilter and autofilter inside tables share the
same XML structure. By taking advantage of that, I just added
a simple reference to the worksheet autofilter inside the table.
In this commit:
- Added autofilter inside tables.
- Implemented XLSX writer and reader.
- Refactored autofilter writer and reader.
- Added additional unit test.
- Fixed the broken test (testLoadOffice365AutoFilter).