Release osmdata 0.3.0

[mpadge]

Prepare for release:

• [x] git pull
• [x] Check current CRAN check results
• [ ] Polish NEWS
• [x] usethis::use_github_links()
• [x] urlchecker::url_check()
• [x] devtools::build_readme()
• [x] devtools::check(remote = TRUE, manual = TRUE)
• [ ] devtools::check_win_devel()
• [x] revdepcheck::revdep_check(num_workers = 4)
• [x] Update cran-comments.md
• [ ] git push
• [ ] ~~Draft blog post~~

Submit to CRAN:

• [ ] Increment version
• [ ] Submit
• [ ] Approve email

Wait for CRAN...

• [ ] Accepted :tada:
• [ ] ~~Finish & publish blog post~~
• [ ] ~~Add link to blog post in pkgdown news menu~~
• [ ] GitHub release
• [ ] Increment to new dev version
• [ ] Update NEWS with new dev version
• [ ] ~~Share on social media~~