Computation times

00:06.335 total execution time for 3 files from auto_examples/datasets:

Example	Time	Mem (MB)
DHFR proteases (plot_DHFR.py)	00:03.361	0.0
S1A serine proteases (plot_s1A_serine_proteases.py)	00:01.729	0.0
Rhomboid proteases (plot_rhomboid_proteases.py)	00:01.245	0.0