doubling the map size seems to destroy the performance -- must investigate
apparently my sort was in the wrong order
well that's a weird path...
apparently reversing the open list is not always a good idea. More investigation required.
aStar should return nothing if you try to path from or to outside the map.
Figured out how to use the cross-product to penalize divergence from 'as the crow flies', which acts as a tiebreaker and makes it more likely that better positions will be evaluated first.
guess we didn't need deepcopy at all
Merge branch 'profiling_bigger_map' into dev

Conflicts:
	main.py
	path_util.py