Merge pull request #4268 from pchote/d2k-palette-fix

D2K palette fixes
Merge pull request #4276 from pchote/initial-map

Improved automatic map selection.
Merge pull request #4277 from pchote/ore-fix

Remove custom terrain when clearing resources.
Rework ra nuke to deal more damage to vehicles. Fixes #4220
Update CHANGELOG for atom bomb changes
Merge pull request #4279 from ScottNZ/balance

Rework ra nuke to deal more damage to vehicles
Add Multiply blend mode for D2K move-flash and shroud.
Move ShroudRenderer into a trait.
New shroud renderer. Fixes #2162. Fixes #3024. Fixes #4034.

Uses the original tile sprites in C&C and D2K and uses a smoother transition in all mods.