cuetag.sh: add support for date/year

src/tools/cuetag.sh

@@ -78,7 +78,7 @@ vorbis()
 	ORGANIZATION=''
 	DESCRIPTION='%m'
 	GENRE='%g'
-	DATE=''
+	DATE='%d'
 	LOCATION=''
 	CONTACT=''
 	ISRC='%i %u'
@@ -121,7 +121,7 @@ id3()
 	TITLE='%t'
 	ALBUM='%T'
 	ARTIST='%p'
-	YEAR=''
+	YEAR='%d'
 	COMMENT='%c'
 	GENRE='%g'
 	TRACKNUMBER='%n'