[pull] master from ropensci:master#4

Merged

chschan merged 6 commits intoDisplayr:masterfrom

Jun 22, 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

Commits on Jun 22, 2020

Translate `\n` to `<br />` in fct labels, too (#1700)
salim-b
authored