Lot of things changed, make sure having a backup if you are going to try that. Please also note: we have a data/media device - https://twrp.me/faq/backupexclusions.html
This is now a nightly as well since the three main ROMs (AOSP, CM, Omni) are in a pretty good shape now (no issues at all on my end), anyone should be able to easily port tuna support to other ROMs (eg. Slim, Dirty Unicorns, ...) pretty easily.