Regarding tidy-html5:
There is a 5.0.0 release of tidy-html5 tagged here:
with a release date of September 4, 2015,
with an active Github setup for maintenance, and this item
to track the Debian packaging issue.
It would be great to get this into sid and eventually into
a mainstream release.
thanks
Ed
--
Edward Vielmetti +1 734 330 2465