[SWRMediathek] add support for swrmediathek.de (fixes #2929)
Remove old, unused CHANGELOG and LATEST_VERSION files
No longer erroneously calculate upload_date within some extractors
Named arguments are not supported by methods implemented in native C (see http://bugs.python.org/issue1176)
BandcampIE changed to report full-accuracy duration instead of unnecessarily rounding it to the nearest integer. Simplified conditionals and parsing a bit. Fixed typos.
Fix photobucket url extraction
Fixes #2924
Fixes #2911
This seems to be the part most often overlooked in our README.