0.6.3

• Change the Connections to stop doing automatic segment / synapse cleanup
• Revamp the TemporalMemory proto so that it captures all information
• For numpy, use a single PyArray_API symbol per binary rather than one per cpp file
• Use numpy 1.12.1
• Use pycapnp 0.5.12
• Use latest pytest 3.0.7, pytest-cov 2.5.0, pytest-xdist 1.16.0