Remove warnings and improve colorbar gallery example#596

Merged

weiji14 merged 5 commits intomasterfrom

improve-gallery-colorbar

Sep 27, 2020

Commits on Sep 10, 2020

Remove warning about Axis sub-item a/f set more than once
weiji14
committed

Commits on Sep 26, 2020

Merge branch 'master' into improve-gallery-colorbar
seisman
authored

Commits on Sep 27, 2020