Merge pull request #236 from blueberrybrownie/new-maskable-icon

Sweet! Thanks a lot!!

client/manifest.json

@@ -4,8 +4,21 @@
     "icons": [{
         "src": "images/android-chrome-192x192.png",
         "sizes": "192x192",
+        "type": "image/png"
+    },{
+        "src": "images/android-chrome-512x512.png",
+        "sizes": "512x512",
+        "type": "image/png"
+    },{
+        "src": "images/android-chrome-192x192-maskable.png",
+        "sizes": "192x192",
+        "type": "image/png",
+        "purpose": "maskable"
+    },{
+        "src": "images/android-chrome-512x512-maskable.png",
+        "sizes": "512x512",
         "type": "image/png",
-        "purpose": "any maskable"
+        "purpose": "maskable"
     },{
         "src": "images/favicon-96x96.png",
         "sizes": "96x96",