Version 0.5.1

A good example of all of these features is this timelapse video.

Changes:

1. Removed borderless fullscreen - it's just fullscreen now
2. Pressing on different game speeds unpauses the game if it's paused
3. Buttons for game speed are colored cyan when pressed, showing what speed your game is at
4. Added the ability to have a selected civ declare war on another if it's right clicked
5. Added the ability to have a selected civ make peace with another if that one is right clicked
6. Added the ability to break truces
7. When a civilization ends its overlordship over a vassal, a truce is declared
8. Civilizations fighting in offensive wars gain extra war exhaustion
9. Distance from capital, not y coordinate, now alters supply
10. When a civilization collapses, it will back out of all offensive wars
11. Civilizations will favor attacking civilizations weaker than them
12. Civilizations will also be less likely to make peace with a civilization that is weaker
13. Changed the algorithm for removing exclaves, reducing(hopefully) the number of little ugly exclaves a civilization controls.