Redo all biome maps to remove DXT1 compression and convert to Indexed .png format.

[Poodmund]

As title states, all biome maps have artifacting due to DXT1 compression. A biome map pass should be done to remove all of this and converted to the indexed .png format in preparation for possible indexed .dds implementation in Kopernicus.

[CaptRobau]

Hey Pood,

I'll try to rustle up all the old sourcefiles for the biomes. Should make your job a little easier.

[Poodmund]

That would be handy if you have them. Anything else you also may think would be helpful... I'm a willing recipient. 😄

If you need somewhere to send them to my email is poodmundgaming@gmail.com .

[Poodmund]

Resolved with commit: fd60fb1