Create transform collections.
Finish off transforms utilities, add tests.
Add ability to separate out eval_points in transforms.
Correct Connection logic in EnsembleVertex.

 - Added new DummyConnection object for Probe edges to play nicely
   with new Transform logic
   - Modified Builder appropriately
Replaced transforms utilities with Connection utilities.

 - Updated in Ensemble
 - Corrections to DummyConnection to account for Nengo functionality
Check for the presence of compatible connections.
Track Nengo upstream.
Correction and simplifications to connections logic.
Modify ethernet to use new Connection logic.
Bugfix: Apply function to output.
Add generic filter filtering capabilities.
Consolidate filter logic.
Merge branch 'master' into transforms
Minor fixes to ethernet io.
Modify SpiNNlink IO for minor API change in simulator.
Merge pull request #53 from ctn-waterloo/transforms

Improved Connection logic