tests ‘added’ instead of ‘mtime’ , and uses a correct date format
tests ‘added’ instead of ‘mtime’ , and uses a correct date format

shamangeorge/beets,Kraymer/beets,jackwilsdon/beets,ibmibmibm/beets,ibmibmibm/beets,shamangeorge/beets,SusannaMaria/beets,Kraymer/beets,sampsyo/beets,sampsyo/beets,SusannaMaria/beets,pkess/beets,shamangeorge/beets,jackwilsdon/beets,pkess/beets,beetbox/beets,sampsyo/beets,shamangeorge/beets,ibmibmibm/beets,ibmibmibm/beets,pkess/beets,Kraymer/beets,SusannaMaria/beets,beetbox/beets,pkess/beets,sampsyo/beets,Kraymer/beets,SusannaMaria/beets,jackwilsdon/beets,jackwilsdon/beets,beetbox/beets,beetbox/beets