Add mapColumn to SP
Change mapPotential1D to support N-dimensional topology
Merge branch 'issue-125' into issue-121
Merge branch 'issue-125' into issue-121
Fix bug with mapPotential caused by bad merge
Renamed mapPotential1D to mapPotential
Ensure compatibility with Python
Merge branch 'issue-125' into issue-121
Merge branch 'master' into issue-121
Merge branch 'master' into issue-121
Merge pull request #129 from chetan51/issue-121

Extend SP to support N-dimensional topology
Merge branch 'master' of https://github.com/numenta/nupic.core into 10-google-test