Add support for Decoding BI_ALPHABITFIELDS#832

Merged

JimBobSquarePants merged 3 commits intoSixLabors:masterfrom

brianpopow:feature/BI_ALPHABITFIELDS

Feb 11, 2019

Commits on Jan 25, 2019

Adds support for BI_ALPHABITFIELDS
brianpopow
committed

Commits on Feb 9, 2019

Merge remote-tracking branch 'upstream/master' into feature/BI_ALPHABITFIELDS
brianpopow
committed
Fix for decoding bitmaps with a less than full sized palette
brianpopow
committed