RStudio Connect v1.6.4

This is a companion discussion topic for the original entry at

RStudio Connect version 1.6.4 is now available!
There are a few breaking changes and a handful of new features that are highlighted below. We encourage you to upgrade as soon as possible!
Breaking Please take note of important breaking changes before upgrading.
Pandoc 2 RStudio Connect includes Pandoc 1 and will now also include Pandoc 2. Admins do not need to install either.
If you have deployed content with rmarkdown version 1.