Set up classes for pathfinding
More pathfinding
Changed min API level to 9
More pathfinding 2
Fixed fighter updating position
NOT WORKING : Path algorithm doesn't always return the good path
Made sure path is only recalculated when necessary
Fixed compareTo
A-Star and JPS work for 1 soldier (per team)
Removed unused data structure
Implemented Squads to group up Fighters
Basic working version with pathfinding. Squads splitup is not yet handled.