Automated update of nupic master sha to 686f07fba74bf6e8352d6537d89af1da5441de15.
Automated update of nupic master sha to 686f07fba74bf6e8352d6537d89af1da5441de15.

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