auto-map-downloading updated. (sync)
auto-map-downloading
give user info that new map has been downloaded (being in lobby). so he is not confused with the reason of black screen
Convert contrails to world coords.
Pass WorldRenderer to AnimationWithOffset.OffsetFunc.
fix MCV crate not being given if normal SelectionShares was zero
Remove unnecessary PPos.FromWPosHackZ() usage.
Convert WithRotor to world coords.
Convert SmokeTrailWhenDamaged to world coords.
Convert RenderUnitSpinner -> RenderUnit + WithSpinner.

Also sets correct offsets for the units that use it.
mcv crate; cloak delay; AI

MCV crate set to 0. This will be at the very least until there is a way to delay good units from showing up early game.
Cloak delay raised to 90 since it re-cloaks fast. This is because currently the stealth tank starts countdown while still in "attack mode", after the last missile was fired. Should be changed again to 1-2 seconds after  https://github.com/OpenRA/OpenRA/issues/2898 is implemented.
Added hard AI.
orca balance

Orca has been shown in playtesting to be too good in large groups. Reducing HP to 90 so that bike rockets, e3 rockets can kill in 3 shots instead of 4.
Returning ammo to 5 again, because adding that extra rocket ended up making a much bigger difference than expected.
Rewrite ThrowsParticle using world coordinates.

The old dynamics were crazy, so this implements
a simpler model using a cubic lerp.
Remove Turret and PVecFloat cruft.
Merge pull request #2911 from chrisforbes/mcv-crate-bugfix

fix MCV crate not being given if normal SelectionShares was zero
Merge pull request #2915 from psydev/patch-1

mcv crate; cloak delay; AI... minor changes
Merge pull request #2919 from Mailaender/fix-makefile

fixes #2913 make clean && make failing
Merge pull request #2823 from ihptru/auto-map-dl

Auto map downloading
Fix #2888
Only choose out of the selectable maps when pressing Random Map in the lobby
Fixes #2907
Sort servers by players in the server browser