Add DNG support v0.7

app/static/service-worker.js

@@ -1,4 +1,4 @@
-const CACHE_NAME = 'photo-date-editor-v6-1';
+const CACHE_NAME = 'photo-date-editor-v7-0';
 const SHELL = ['/', '/styles.css', '/app.js', '/manifest.webmanifest', '/vendor/leaflet/leaflet.css', '/vendor/leaflet/leaflet.js'];
 
 self.addEventListener('install', (event) => {