[crunchycroll] Fix building of ass subtitles (reported in #4019)

Parse the xml document instead of using regexes, otherwise unicode characters are left unescaped.
release 2014.10.29
[ro220] Fix broken extractor and modernize (#4054)
[youtube] Add formats 298, 299 (Fixes #4056)
Sort formats by fps as well
[youtube] Add support for formats 302 and 303 (Fixes #4060)
[youtube] Add format 266 (Fixes #4055)
release 2014.10.30