state of the files as of mid-2014

rearranged the dirs a bit to make it more logical and more like a standard repo
cleanup for new repo

changed all paths that refer to files that moved
took out all "old way" stuff: we have version control now!
allow tracklists to have titles and subtitles in comments
new script to find (and potentially fix) albums without tracklists
new script to copy ID3 tags from one MP3 to another

gives warning if you're going to overwrite any existing tags
new script to convert .wav to .mp3

(dunno why I never had this before)
default: convert fairly high quality using `avconv` (part of `ffmpeg`)
option to convert lower quality (smaller file) to match what Grip has traditionally done
new script to "compare" MP3 files

doesn't really compare them in the sense that it checks to see if they're the same musically
but it will tell if the two tracks have different times, different titles, different tags, etc
-	which will usually let you know if there's a decent chance that they're the same
also will catch differences in quality by comparing bitrate and frequency
also updated `find_dup_singles` to use `mp3diff` to make sure dups are really dups
fix a couple of small bugs in find_genre

-	stop it freaking out if there's a non-mp3 file in the dir
-	have it throw a warning if there are mp3's without tags
--		(instead of blowing up, which is what it used to do)
fix buglet in bin/invert_names

-	make regex non-greedy to avoid being confused by ' - ' in album name