check in

My commit-discipline when writing is much weaker than when coding—as you've
noticed, I'll often make little changes to many files, and then lump them into
one commit under the message "check in". In this case, I want to start my
writing day with a clean repo state, so that the git-wordcount (new command I
wrote, like it sounds) of my next "drafting 'The Categories ...'" commit is
more localized in time.