Added timescale factor
Fixed Michael's scaling to work when there is no std_dev and when the
weights are fixed values
Re-inserted code for initial value scaling of weights in the exponential
synapse
Removed the visualiser, as this is now handled externally
Updated the version numbers and packages for release
Removed more visualiser stuff
And removed even more visualiser stuff
Think I have removed all the visualiser bits now
Fixed some binary names
Fixed the way that live spikes come from a population