Organizing migrations in sub-folders

[rotten]

I have a project which has grown to have well over 100 migrations. Stashing them all in a single deploy/revert/verify folder is starting to look pretty cluttered. I would love to be able to organize them into subfolders, ie deploy/groupA and revert/groupA and verify/groupA. It isn't obvious from the documentation that this is easy to do. I was curious how other sqitchers have approached the challenge of scaling to lots of migrations.

[theory]

You can add changes in folder by simply giving them names with slashes, e.g.,

sqitch add groupA/create_foo

[rotten]

Nice, simple, thanks!