The new p4-trigger-script interfaces with RBTools and Perforce to

enable administrators to integrate their Perforce servers with Review

Board. It offers options for requiring submitted changes to have review

requests, to require those review requests to be approved, and to

auto-close review requests.
There's also a new set of P4V configurations, which replace the ancient

P4Win configuration (which still mentioned post-review). These are

available for Windows, macOS, and Linux, and allow users to post/update

review requests right from P4V.

Tested all the options in the trigger script locally.
Tested P4V on macOS and on Windows locally. A customer tested it on

Windows as well.
Verified the contents rendered correctly in the README.