Checking whether there is a wall at start_point

If there’s a wall, we know for certain it’s not wasteland.
Using an int matrix for wasteland detection

3 possible states, not 2 (unsearched, wasteland, wall)
Checking boundary cases for new indices
Adding pretty-print functionality for int matrices
Adapting to work with all 8 directions
Merge branch 'master' of https://github.com/phargogh/imadeafortresswithzombiesoutsideit

Conflicts:
	zomblieFortress/Assets/Board.cs
Merge branch 'master' of https://github.com/phargogh/imadeafortresswithzombiesoutsideit