Initial integration of Terry Stewart's LFSR for spike peturbation.
Correction to force the LFSR to be interpreted as 0 < v < 1
Correction to force 15 bits of LFSR rather than 16.
Correction to force 15 bits of LFSR rather than 16.
Corrected to negate LFSR using bitwise NOT.
Consistent function calls.
Upstream PACMAN changes.
Upstream Nengo changes.
Merge pull request #18 from ctn-waterloo/ensemble-spike-correction

Spike Peturbation
Merge in from master to track changes from Nengo and PACMAN upstreams.
Add a default solver.
Corrected import
flake8
Start use of Spec `write_array` over `write`.
Retrieve objs and connections from a container.
Track Nengo changes.
Track PACMAN changes.
Set application mask.
Go back to creating key/mask pairs. (Upstream changes)
API change in SpiNNaker tools 1.3