Defensive end of line.

bower.json

@@ -20,12 +20,12 @@
   ],
   "private": false,
   "dependencies": {
-    "amber": ">=0.21.0",
-    "amber-contrib-web": ">=0.5.0",
+    "amber": ">=0.21.0 <0.23.0",
+    "amber-contrib-web": ">=0.5.0 <0.6.0",
     "jquery-ui": ">=1.9.2",
     "codemirror": "^5.25.2"
   },
   "devDependencies": {
-    "helios": ">=0.8.0"
+    "helios": ">=0.8.0 <0.10.0"
   }
 }