Fixed proxy issues when starting new multiplayer games - By alexban011

By SomeTroglodyte:
- Optional gzipping of saved games 
- Modding: Typed unit promotion effects

By Azzurite:
- Add UncivServer.jar to github release
- Improvements and city buttons visible to Spectator

By touhidurrr:
- Autofix Multiplayer Server URL on input 

Hide Unmet Civ and Capital Names in Victory Screen - By OptimizedForDensity

Improved clarity & moddability of building improvements  - By xlenstra