v4.5

• Added more flags, bit number defines, and offset constants for OAM and window positions
• Added CH3- and CH4-specific audio registers flags
• Deprecate VRAM address constants
• Deprecate VRAM CART_SRAM_2KB constant
• Added bit number definitions for OCPS, BCPS and LCDC

Thanks to @sukus, @avivace, @ISSOtm, @GreenAndEievui and @rondnelson99 for this release!

Update to use RGBDS 0.5.0 `DEF` syntax

This breaks compatibility with older versions, but a check is in place to produce a readable error.

Also, IEF_LCDC was deprecated in favor of IEF_STAT.

Reordering, cleanup and fixes

Merge pull request #4 from BlitterObjectBob/master

Register ordering, byte-based sizes, OAM additions, general cleanup

Add PCMXX registers

Merge pull request #1 from ISSOtm/patch-1

Add PCMXX registers