Starting new farm clustering functionality

Calling it from the Board.
Adding rudimentary clustering

Grouping the clustered pixels together into new Cluster objects.
Adding initial farm cluster detection
Updating variable printing for clusters
Fixing out-of-bounds access.
Adding boolean printMatrix
Farm cluster detection works properly
Removing printMatrix call
Removing commented-out stuff
Function for getting the centroid of bounding box
Adding cluster dims to labels
Merge branch 'master' of https://github.com/phargogh/imadeafortresswithzombiesoutsideit

Conflicts:
	zomblieFortress/Assets/Board.cs
	zomblieFortress/zomblieFortress.userprefs