lavish branch is a "testing" branch (should probably be renamed as such) & other branches should be testing1, testing2, etc
document recent changes to master branch each time they are committed - those making commits should remember to do this
changes that are merged to master have to be proved metrically and psychovisually through heuristic evaluation. ideally one must test XPSNR and SSIMU2, but an SSIMU2 + visual improvement will suffice.