Computation times

00:01.565 total execution time for gallery_spines files:

Spine Placement (spine_placement_demo.py)	00:00.483	0.0 MB
Spines (spines.py)	00:00.342	0.0 MB
Multiple Yaxis With Spines (multiple_yaxis_with_spines.py)	00:00.261	0.0 MB
Centered spines with arrows (centered_spines_with_arrows.py)	00:00.172	0.0 MB
Dropped spines (spines_dropped.py)	00:00.168	0.0 MB
Custom spine bounds (spines_bounds.py)	00:00.138	0.0 MB