MapMipMapMod

New version of MapMipMapMod with new config parameters.

• Ability to stop all map updates, locked map updates and no map updates. This should help for huge displays of unlocked maps.
• Ability to turn all item frames transparent, or only the ones with maps. Maps with transparent backgrounds benefit the most.
• Ability to change the depth bias for map rendering. This should lesser the Z-fighting of the map and item-frame texture at long distances.

I'll start porting to older versions in the following weeks, so don't worry if you don't play the latest ones.