Fixes an issue where compressing an H2MCC map would write the wrong value to the flags field in the header that often causes the "supports anniversary" flag to get unset.
Compressing with this new version should handle flags as intended going forward, but existing maps that were compressed with an older version will require hex editing to restore the flags;
The flags field is 2 bytes at offset 0x1C. Set to the following depending on the current state of the map:
09 00 - Compressed, Supports Anniversary (stock maps)
08 00 - Uncompressed, Supports Anniversary
01 00 - Compressed, No Anniversary (custom maps)
00 00 - Uncompressed, No Anniversary (custom maps)
The image below has the flags value highlighted from a stock map as a reference.
