0.4.0

• 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: 'TPShim' object has no attribute 'topDownCompute'
• Support more parameters in TPShim
• 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