Remove redundant code
Use struct format 'Q' to read/write 64bit integers
Simplify date parsing
Simplify mac_epoch_diff
Remove unused data
Initial sbix support from Jens Kutilek
Whitespace
Fix imports
2to3 sbix code

This seems to work now.

At some point we should go back and clean up and merge datastructures
between the four different color font formats.
Update MetaTools/buildTableList.py to reflect recent changes
Update table list for sbix
Merge remote-tracking branch 'upstream/master'