Added fap_version field to all apps (#15)

application.fam

@@ -9,6 +9,7 @@ App(
     ],
     stack_size=2 * 1024,
     fap_description="Implements a mass storage device over USB for disk images",
+    fap_version="1.0",
     fap_icon="assets/mass_storage_10px.png",
     fap_icon_assets="assets",
     fap_category="USB",