Traversing a maze of twisty passages (all vaguely similar) I found my way to
Sending Patches, which describes a process that seems like what I used to do. But I'm perplexed when it comes to the part that mentions "commit log" with links to
Change Log (and
Change Log Concepts in a few ways!), seemingly interchangeably, particularly because the lisp/Changelog.* files in my current checkout of the git repository (with new commits from yesterday, for instance) have no updates since Emacs 24.3, as far as I can see.
I'm guessing that I should put the equivalent of what would have been in the ChangeLog in the commit messages, but thought I'd ask here for proper guidance. I welcome pointers to documents I missed that would have made this simpler, as well!