Update Izhikevich.py

just a comment was wrong i think
Merge pull request #285 from tomish/patch-1

Update Izhikevich.py
Merge pull request #283 from obreitwi/nest_fixes

pyNN.nest: Fixed being unable to use native synapse types that used either array-like parameters or common properties.
Update plotting.py

spike trains were not displaying due to too small y axis
Merge pull request #291 from tomish/master

Update plotting.py
Update plotting.py

plot on ax, not plt. This prevents spiketrain being plotted on bottom subplot in a figure with subplots.
Update plotting.py

Converted some plt to ax, this fixed interference with other subplots in the same figure which had been causing them to sometimes display with wrong ylim etc.
Merge pull request #292 from tomish/patch-2

Update plotting.py