update dependencies + notify

Author: Félix Jullien

bower.json

@@ -19,14 +19,14 @@
   ],
   "dependencies": {
     "polymer": "Polymer/polymer#^1.2.0",
-    "iron-input-image": "Zecat/iron-input-image#~1.0.0",
-    "paper-tile": "Zecat/paper-tile#~1.0.1",
-    "iron-icons": "PolymerElements/iron-icons#~1.1.1",
-    "iron-form-element-behavior": "PolymerElements/iron-form-element-behavior#~1.0.6"
+    "iron-input-image": "Zecat/iron-input-image#^1.0.0",
+    "paper-tile": "Zecat/paper-tile#^1.0.1",
+    "iron-icons": "PolymerElements/iron-icons#^1.1.1",
+    "iron-form-element-behavior": "PolymerElements/iron-form-element-behavior#^1.0.6"
   },
   "devDependencies": {
     "iron-component-page": "PolymerElements/iron-component-page#^1.0.0",
     "web-component-tester": "*",
-    "iron-demo-helpers": "PolymerElements/iron-demo-helpers#~1.0.3"
+    "iron-demo-helpers": "PolymerElements/iron-demo-helpers#^1.0.3"
   }
 }

paper-input-image.html

@@ -67,21 +67,24 @@
        */
       noImageText: {
         type: String,
-        value: 'No image selected'
+        value: 'No image selected',
+        notify: true
       },
       /**
        * The image src.
        */
       src: {
         type: String,
-        value: ''
+        value: '',
+        notify: true
       },
       /**
        * The size of the selected image (ko).
        */
       size: {
         type: Number,
-        value: 0
+        value: 0,
+        notify: true
       },
       /**
        * The text displayed. Equales to noImageText if no image is selected and