Update 1.2.56

ADD: Unit definitions in mods can now inherit key-value data from other unit definitions, syntax is the same as for nation definitions ADD: Czechoslovakia as filter nation for unit gallery, list now sorted alphabetically

CNG: Improved messaging for effects on the Attacker Moving to-hit modifier CNG: Some Campaign Day random events will now only affect a zone that is adjacent to the player CNG: Amounts for the "additional support made available" random Campaign Day event now increased

FIX: Player vehicles that took a penetrating hit and were later knocked out will no longer check to see whether the PH is repaired at the end of the day FIX: Missing base AP score for 57L gun FIX: Crash report screen could sometimes have a red background FIX: Rare crash when a refitting day appears at the end of the combat calendar FIX: If player withdrew from a battle and the combat day then ended, the campaign day summary would be displayed twice FIX: In foggy conditions, unit fortification greebles now displayed darker so as to be visible