Pull Request Reviews API becomes an official part of API v3

The Pull Request Reviews API just graduated from preview mode. It's now an official part of GitHub API v3, along with Review Requests.

Preview media type no longer needed

If you used the Pull Request Reviews API during the preview period, you needed to provide a custom media type in the Accept header:

application/vnd.github.black-cat-preview+json

Now that the preview period has ended, you no longer need to pass this custom media type. Instead, we recommend that you specify v3 as the version in the Accept header:

application/vnd.github.v3+json

Onward! Thanks again to everyone that tried out the Pull Request Reviews API during the preview period.