Version 0.21.0 Released

[SephiRok]

• NOTE: Previously saved games are not compatible with this version.
  
  Added:
  * Added ability to stop city growth.
  
  Changed:
  * AIs now always acts before queued player actions.
  * Converted aliens have a 25% chance to die after being converted for 4 turns.
  * Increased alien upkeep costs.
  * Headquarters now provide 50% defense bonus.
  * Insults against other factions are now randomized.
  * Reduced growth of alien leash range.
  * Reworked morale bonus system for AI (needs testing, might be too much).
  * Show diplomatic actions in the event log.
  * Dialogue panel now closes after performing dialogue actions in multiplayer.
  
  Fixed:
  * Fixed raze city crash.
  * Fixed transport not being recognized as an idle unit.
  * Fixed accept/reject share map not ending the dialogue.
  * Fixed battle panel showing incorrect casualties for sniper units.
  * Fixed Mac OS X library issues.
  * Fixed a dialogue crash in multiplayer.