Diplomacy - Update https://github.com/diplomacy/diplomacy

Age	Commit message (Collapse)	Author
2019-09-14	Added ReadtheDocs documentation for the public API	Philip Paquette
	- Reformatted the docstring to be compatible - Added tests to make sure the documentation compiles properly - Added sphinx as a pip requirement Co-authored-by: Philip Paquette <pcpaquette@gmail.com> Co-authored-by: notoraptor <stevenbocco@gmail.com>
2019-08-28	Use calls to Game parent methods in function to_saved_game_format().	notoraptor
	This will help using the function even with derived classes.
2019-04-18	Refactored get_all_possible_orders for 2.5x speed improvement	Philip Paquette
	- Returning all locations at once - Removed 'loc' argument from method - Map has pre-computed attribute dest_with_coats
2019-04-18	Release v1.0.0 - Diplomacy Game Engine - AGPL v3+ License	Philip Paquette