OpenSlides/OpenSlides — pull request #672 by rolandgeider (2013-05-18 14:46:10+00:00)
Title: Pin the version of html5lib

The last version of html5lib, 1.0b1 is installed by bleach (>=0.95) but that version has removed the simpletree walker, so nothing works anymore. If you'd prefer to wait for an update to bleach, ignore this pull request

See also https://github.com/jsocol/bleach/issues/94