Added mapColumn function
Updated mapPotential to support N-dimensional topology (but it's too slow right now)
Renamed variables
Optimized getNeighborsND
Simplified code
Update test
Ensure inputDimensions and columnDimensions have at least 1 dimension
Cleaned up avgConnectedSpanForColumnND
Better error messages for assertions
Merge branch 'master' into issue-837
Merge branch 'master' into issue-837
Remove unnecessary semicolons
Merge branch 'master' into issue-837
Ensure compatibility with C++
Point to updated nupic.core
Merge branch 'master' into issue-837
Update test
Point to latest nupic.core
Merge branch 'master' into issue-837
Merge pull request #2 from rhyolight/issue-837

Merge in master