Milestone 5.21.0 Released! (Experimental) — Xenonauts 2 Steam update #391686

This update is also only accessible by switching to our Experimental branches (instructions on how to do so here) - although please be aware they have slower load times and worse performance than normal builds due to the extra logging they contain! This is the fourth Milestone 5 STABLE "release candidate" build, and we'll release it onto the public branches for everyone to play if it proves stable. Please do report any stability issues you encounter! Changes: UOO Bridge Assault mission turn 5 alien reinforcements now only spawn once, rather than spawning every turn after turn 5. This means there's six fewer aliens spawning per turn from turn 6 onwards (however large waves of reinforcements still spawn on turn 8, and every 3 turns after that). Increased the acceleration values of all aircraft in the air combat, as they were set to about 10% of their intended values (which made aircraft sp...