Noticed that valid? is not being used - added a TODO note since its probably not required if the reader is cleaning up lines
Cleaned up unused code
Removed the deprecated code that was in deprecated.rb
Moved the check for file existence into read_file
File check moved to write_file, fixed \r\n, tweaked write_header to write_headers
Tweaks to require
Renamed m3uzi to m3uzi2
As far as I can tell, apart from a useful IV formatter and check, the remaining code was just superfluous hence refactored to the bone
Removed the byterange class
Started to update the readme