Updates nupic.core to 3b40f67e8dc09f2c8e205be3c0ff5e8303ca01fc.
Namespace-prefix all names in MonitorBase
Namespace-prefix all names in TemporalMemoryMonitorMixin
Updated documentation and simplified code
Merge pull request #1389 from numenta-ci/core-update-sha

Updates nupic.core to latest built SHA.
Merge pull request #1392 from chetan51/issue-1391

Namespace-prefix all names in Monitor Mixins