Allow interactively choosing the match to use as rename data
Add a flag to report instead of perform an action
Rename `identify` to `rename`
Allow classifying multiple files at once
WIP parsing RIFF data
WIP
Make RIFF elements public

Codecs need to access the contents in a non-generic way...
Replace "media format" with "codec", remove as property of media file
Update to latest version of codegangsta/cli
Properly decode AVI headers
Basic working EBML parser
Extracted EBML parsing into separate package
Parse the EBML document to compute the media duration