approaching a constant space bfs search
incorrect inverse functions, correct corners
fixed inverse edge funtion
correctly create edge table in bfsmem
fixed inverse edge funtion
fixed centers inverse function, correct generation
Merge branch 'bfsmem'

Conflicts:
	calc.cpp
Merge branch 'master' into Corner8

Conflicts:
	calc.cpp
	create.cpp
	main.cpp
added fragmented memory in an ugly way.