Please commit all future work on HEAD (until we branch for 5.4). We don't anticipate any further releases on the 5.3 branch so there won't be any future merges. If you need to commit to 5.3 for some reason, and want to see your work appear in future releases, you'll need to commit to HEAD, too.
This is just for acs-core.
dotlrn-all and dotlrn-extras will be merged this weekend.
Other packages are in the hands of those using them, I won't be touching them.