Simpler serialization
Simpler serialization

Just use a dictionary instead of a list of tiny one-key dictionaries. Still
need to update the deserialization.

pkess/beets,madmouser1/beets,diego-plan9/beets,artemutin/beets,mosesfistos1/beetbox,Freso/beets,shamangeorge/beets,sampsyo/beets,pkess/beets,parapente/beets,beetbox/beets,shamangeorge/beets,SusannaMaria/beets,jcoady9/beets,SusannaMaria/beets,parapente/beets,xsteadfastx/beets,kelvinhammond/beets,madmouser1/beets,Kraymer/beets,artemutin/beets,ibmibmibm/beets,mosesfistos1/beetbox,Freso/beets,kareemallen/beets,madmouser1/beets,beetbox/beets,diego-plan9/beets,MyTunesFreeMusic/privacy-policy,madmouser1/beets,beetbox/beets,jackwilsdon/beets,beetbox/beets,kareemallen/beets,diego-plan9/beets,jackwilsdon/beets,mosesfistos1/beetbox,xsteadfastx/beets,jcoady9/beets,kelvinhammond/beets,jackwilsdon/beets,SusannaMaria/beets,shamangeorge/beets,mosesfistos1/beetbox,sampsyo/beets,kelvinhammond/beets,sampsyo/beets,artemutin/beets,ibmibmibm/beets,LordSputnik/beets,xsteadfastx/beets,kareemallen/beets,lengtche/beets,Kraymer/beets,Freso/beets,parapente/beets,Kraymer/beets,mried/beets,lengtche/beets,Freso/beets,jcoady9/beets,Kraymer/beets,kelvinhammond/beets,swt30/beets,jcoady9/beets,pkess/beets,LordSputnik/beets,diego-plan9/beets,artemutin/beets,LordSputnik/beets,MyTunesFreeMusic/privacy-policy,lengtche/beets,MyTunesFreeMusic/privacy-policy,jackwilsdon/beets,kareemallen/beets,sampsyo/beets,pkess/beets,swt30/beets,SusannaMaria/beets,swt30/beets,mried/beets,ibmibmibm/beets,MyTunesFreeMusic/privacy-policy,xsteadfastx/beets,parapente/beets,LordSputnik/beets,mried/beets,ibmibmibm/beets,lengtche/beets,swt30/beets,mried/beets,shamangeorge/beets