Fix axis facets#1788

Merged

cpsievert merged 4 commits intoplotly:masterfrom

trekonom:fix-axis-facets

Jun 17, 2020

Commits on Jun 7, 2020

Fix bug in verify_attr. Closes issue #1720.
trekonom
committed
Add test to check that ggplotly does not break discrete x-axis in facet panels with only one category.
trekonom
committed

Commits on Jun 17, 2020