Added checks for mask bits and potential to be >= _stimulusThreshold
Updates nupic.core to c0fc30676bdf744e15f6ccaaa810230a8ae2262d.
Merge pull request #1373 from numenta-ci/core-update-sha

Updates nupic.core to latest built SHA.
Merge pull request #1372 from cogmission/stim_threshold_check

Added checks for mask bits and potential to be >= _stimulusThreshold
Merge pull request #1371 from chetan51/issue-1370

Implement new, flexible monitor mixin framework
Merge branch 'master' into issue-1374