Functional modification to StimulusGroup
Merge branch 'master' of https://github.com/fzenke/auryn
Fixes bug in StimulusGroup

This fixes an assertion > 0 error for binary pattern stimuli with zero
background rate during stimulus.
Adds exception handler to SparseConnection
Adds first revision of ProfilePoissonGroup

Allows to efficiently generate Poisson spikes with a spatial profile
(different firing rates for individual neurons).
Changes to AuditoryBeepGroup

AuditoryBeepGroup now inherits from ProfilePoissonGroup.
Changes to ProfilePoissonGroup

Certain changes to make ProfilePoissonGroup parallel proof.
Adds docstrings to SyncBuffer.h
Updates Makefile.include for lib target
Fixes problem in AuditoryBeepGroup