mq: qpop: remove added files before re-adding removed files We need to do this to avoid file/directories conflicts. This causes patches removing a committed file and replacing it with a directory to be "unpoppable".

revlog: rewrite several method docstrings - methods: findmissing(), nodesbetween(), descendants(), ancestors() - the goal is precise, concise, accurate, grammatical, understandable, consistently formatted docstrings

color: Add support for bookmarks