Mark highest damage type as used regardless of damage magnitude so you always practice something when attacking in melee.
closest_points_first goes clockwise not counterclockwise.
Added a general +1 movementcost for diagonals.
Merge branch 'astar-fix' of https://github.com/OzoneH3/Cataclysm-DDA into merge
Merge branch 'melee-practice' of https://github.com/kevingranade/Cataclysm-DDA into merge