* Updated hello_tm.py to use accessors
* Updated TP_shim.py to use accessors Updated `columnForCell` and `_validateCell` in FastTemporalMemory to conform to their docstrings, which is needed for the change to TP_shim.py
* Updated temporal memory monitor mixin to use accessors
* Updated temporal_memory_test.py to use accessor methods.
* Added accessors to temporal_memory.py
* Change temporalImp to tm_py for both networks and add comment about it being a temporary value until C++ TM is implemented
* Refactored to remove common code between network_checkpoint_test.py and temporal_memory_compatibility_test.py
* Use named constants from nupic.data.fieldmeta in aggregator module instead of naked constants.
* Fix AttributeError: 'TMShim' object has no attribute 'topDownCompute'
* Support more parameters in TMShim
* Serialize remaining fields in CLAModel using capnproto
* Enforce pyproj==1.9.3 in requirements.txt
* Use FastCLAClassifier read class method instead of instance method
* Have CLAClassifierFactory.read take just the proto object
* Add capnp serialization to CLAClassifierRegion
* Add capnp serialization to SPRegion