Mainly fixes for issues that were found since last update

* Fixed issues with advancing to next Stage in the Regiment Management screen
* Fixed Regiment TacAid upgrade level always cutting down TacAid delay to 50%; now correctly scales with the upgrade level
* Fixed unit damage shader
* (Probably) Fixed helicopter wreck pieces sometimes staying in the air

* Added unit damage to aircraft
* Adjusted aircraft and helo death effects
* Feature preview - added slogans to M1A1 gun tubes

* Adjusted PIVADS - shorter range, but more accurate
* Small attack helicopters get better vision range
* Added ACAV platoon type, assigned to tank recon platoons

* Switched infantry squad names to national names
* 2-42/6-63 TF names swapped to match unit types
* Switched most WG Pionere platoons to Fuchs
* Removed BMP-1P from Polish regiments
* Added Polish PT-76 with correct model
* Fixed combat 6xPT-76 platoon using recon stats
* Added FN FNC to Belgian infantry

* Added a fading effects to units and aircraft during spawn/despawn
* Added more informative unit names to game log

* Minor optimizations
* Switched to a saner version numbering scheme, finally