Configure post_commit_to per repository

Feature Request: a way to set post_commit_to on a per repository basis

The reason I'd like this feature is because I will be committing code to a couple of different projects with bazaar branches. Each of these projects has their own commit list and there doesn't seem to be a way to send commit messages to the right project list for each repository.

Possibly a configure option could be set in .bzr/branch/branch.conf, however you aren't supposed to manually edit files in the .bzr directory and it's unclear if there is a way to "properly" add options to that file (e.g., bzr set --branch "<email address hidden>"). Also, it's unclear whether this could even work in a central server workflow (e.g., bzr+ssh) where the post_commit_to options are set on the server. This is the workflow we use.

An ugly hack for the central server model could be to make a separate ssh account for each project, each with it's own bazaar.conf. However, this would mean everyone is sending commit messages with the same from address. Which is undesirable.