replaced 000000 color with 100c0c

closes #3254
Split TD system.yaml into four yamls
Merge RA music-cs.yaml and music-am.yaml with music.yaml
Split RA system.yaml into four files
added nod03b

Finished off nod03b

fixed indentation & inf in front of trees

fixed oil derrick
Split D2k system.yaml into four files
Split TS system.yaml into four files
changelog entry for system.yaml split
Merge pull request #4430 from reaperrr/system-yaml-split1

Divided system.yaml of all shipping mods into multiple yamls
Merge pull request #4419 from Mailaender/snipericon-fix

Fixed transparency glitches in the sniper icon.
map-downloading: use filename served by content-disposition as saving location
Added descriptions for LaserZap Color and HitAnim traits
Added HitAnimPalette trait to LaserZap projectile, LaserZap HitAnim can now use other palettes than the default effect palette.
changelog entry for LaserZap's HitAnimPalette
Merge pull request #4433 from reaperrr/laserzap-improvement

LaserZap improvements
optimized frame limit sleep

* calculate idealFrameTime only when needed
* only create a new Stopwatch when needed
* disallow wait times > 1 second
Merge pull request #4447 from Mailaender/fps-limit-opt

Optimized frame limit sleep
Merge pull request #4428 from dan9550/nod03b

Added nod03b
Permit black color (S=0.0, V=0.2)
Merge pull request #4441 from xaionaro/bleed

closes #4425