Computation times

00:30.908 total execution time for 5 files from examplesimplants:

Example	Time	Mem (MB)
Simulating Argus II (plot_argus.py)	00:27.816	0.0
Retinal implant gallery (plot_implants.py)	00:01.877	0.0
Cortical implant gallery (plot_implants_cortical.py)	00:00.825	0.0
Creating your own electrode array (plot_custom_electrode_array.py)	00:00.202	0.0
Creating a grid of electrodes (plot_electrode_grid.py)	00:00.187	0.0