4.21.12
Reduce RAM when saving/loading to/from files
Fix rare crashes when handling events while screens are being changed
Fix crash on Options re-open with force-close, e.g. toggling 'Enable out-of-game turn notifications' - By SomeTroglodyte
AI does not see unexplored tiles for tile value when assessing settler locations - By ssamt
Clarify distance-based unit cycle option - By mvanhorn
Population in cities countable - By PLynx01
Modding: Downgrade 'same name for multiple entries' to 'OK', lowest level of warning, since most cases are benign