Correctly assign parts of an ensemble to a subvertex.
flake8
Merge pull request #12 from ctn-waterloo/bugfix-ensemble-subvertices

Bugfix: Ensembles didn't generate appropriate specs for subvertices
Merge in changes from master.
Bugfix: Remove spurious ```uint```s from merge.
Merge pull request #13 from ctn-waterloo/refactor-ensemble

Refactor of Ensemble, move of files in Tx
Merge in changes from master.