Automated update of nupic master sha to aa54bd6f036d57e56287c0c9bd8b7f09468d137e.
Automated update of nupic master sha to aa54bd6f036d57e56287c0c9bd8b7f09468d137e.

numenta/nupic.regression,scottpurdy/nupic.regression,numenta/nupic.regression,scottpurdy/nupic.regression