Pass through certain "safe" types to YAML
Pass through certain "safe" types to YAML

This avoids some round-tripping problems with types (such as ScaledInt) that
are not represented in strings with 100% fidelity. It also makes the syntax
nicer when editing numbers and booleans: they no longer appear to be
needlessly surrounded by quotes in the YAML.

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