create media_info package
add youtube backend
lstrip → pstrip
add media_info.normalize
use iNS to handle info from /get_video_info
set media id in MediaInfo.get_by_id()
add media type (audio, video, etc) in info
add possibility to provide settings in the command line
add soundcloud backend
simplify the settings system
add raw mode
some fixes
remove henceforth invalid import
add beatport backend
rename to media_hosts, add README, license and packaging stuff