Release pkgdown 2.1.0

[hadley]

Prepare for release:

• [x] git pull
• [x] Check current CRAN check results
• [x] Check if any deprecation processes should be advanced, as described in Gradual deprecation
• [x] Polish NEWS
• [x] urlchecker::url_check()
• [x] devtools::build_readme()
• [x] devtools::check(remote = TRUE, manual = TRUE)
• [x] devtools::check_win_devel()
• [x] revdepcheck::cloud_check()
• [x] Update cran-comments.md
• [ ] git push
• [ ] Draft blog post
• [ ] Slack link to draft blog in #open-source-comms
• [x] Check that test/widget.html responds to mouse clicks on 5/10/50

Submit to CRAN:

• [ ] usethis::use_version('minor')
• [ ] devtools::submit_cran()
• [ ] Approve email

Wait for CRAN...

• [ ] Accepted :tada:
• [ ] Finish & publish blog post
• [ ] Add link to blog post in pkgdown news menu
• [ ] usethis::use_github_release()
• [ ] usethis::use_dev_version(push = TRUE)
• [ ] Tweet

[hadley]

@maelle @olivroy @salim-b @jayhesselberth I'm aiming for a release on Friday (or failing that early next week). Please let me know if you have any comments or concerns, or there are any issues that you think are must fix issues prior to release (apart from the ones I'm tracking in https://github.com/r-lib/pkgdown/milestone/10).

[hadley]

@maelle @olivroy @salim-b @jayhesselberth please take a look at the blog post and let me know if you think I've missed anything important.

[hadley]

Blog post is out, but it's certainly not too late to add stuff if you think I'm missed anything major.