There's a ton of cli tools to automate maintaining a stack of PR's, with new ones coming out all the time. I've seen 'spr' for a long time, and recently there's

There's a ton of cli tools to automate maintaining a stack of PR's, with new ones coming out all the time. I've seen 'spr' for a long time, and recently there's graphite's and even aviator came out with 'av'. All supported by Reviewable, of course (sorry for the shameless plug!)