Audio, Video Tag Nuking request
Knowing me, this is probably already on your to-do list, and this will be merely irksome, BUT, if you could prevent Sigil from constantly nuking audio and video tags, that would be lovely. I have a pretty good number of authors now embedding video into their ePUBs destined for iBooks, and this means that I have to tweak the final output by hand, as I can't use Sigil.
I originally thought it was Tidy, but it isn't; turning Tidy off doesn't stop the carnage. ;-) (Oh! The Humanity.....)