tidyverse issue template for releasing packages

[maurolepore]

r-lib/usethis#338

Prepare for release:

* [ ] `devtools::check_win_devel()` 

* [ ] `rhub::check_for_cran()` 

* [ ] `revdepcheck::revdep_check(num_workers = 4)` 

* [ ] [Polish NEWS](http://style.tidyverse.org/news.html#before-release) 

* [ ] If new failures, update `email.yml` then `revdepcheck::revdep_email_maintainers()` 



Perform release: 

* [ ] Create RC branch (for bigger releases) 

* [ ] Bump version (in DESCRIPTION and NEWS) 

* [ ] `devtools::check_win_devel()` (again!) 

* [ ] `devtools::submit_cran()` 

* [ ] `pkgdown::build_site()` 

* [ ] Approve email 
  
  
  
Wait for CRAN... 

* [ ] Tag release 

* [ ] Merge RC back to master branch 

* [ ] Bump dev version 

* [ ] Write blog post 

* [ ] Tweet 

* [ ] Add link to blog post in pkgdown news menu 



Template from <https://github.com/r-lib/usethis/issues/338>