Alpha 21

Development started by ​Wildfire Games on april 2nd 2016 (r17966).

The following list highlights the most important changes (more noticable ones first):

Gameplay & Balancing ==

r17974 owning multiple wonders gives multiple population boni (#3522 #3792)
r17999 defense tower techs don't affect wall-turrets anymore
r17970 reduce wall-tower range from 88m to 72m, increase minimum distance from 3m to 12m
r18004 dropsites shared by default

Petra AI

r17971 use corrals with low starting resources

Engine

r17975 cinematic paths: interpolate camera rotation