V 2.21 Update

Balance

New improvement: Galactic Mainframe. Can't be built on one's homeworld. Acts as a hub for other research buildings.
Deep core mine base social production increased from 1 to 3, provides a universal manufacturing bonus to adjacent tiles.
Various reclassifications of improvements for the AI
Hyperspace project provides a +3 to neighboring research
Brindle's Observatory adjacency research bonus increased from 2 to 3
Kimberley's Refuge is now indestructible, provides +3 to the neighboring population.
City population cap reduced from 16 to 9.
City food cost increased from 2 to 3.
Cities provide +2 level bonuses to Research, Manufacturing, Wealth and Influence improvements!
Colonial hospital is now indestructible
Colonial hospital population growth increased to 0.1 flat per turn
The GIA provides a +1 influence adjacency bonus
Consulate now provides a flat +1 influence per turn bonus
Consulate goes up by +1 influence per turn for every other influence improvement that is adjacent
Various higher level influence buildings receive the same benefit as the Consulate plus keep their existing benefits
Changed most galactic events to only occur ONCE rather than once for each player. This should also eliminate the Pirate spam.