Revert "Mark lib as post-0.16.0 format."

This reverts commit 597f2364d343b20ab1e0e6608ad5f62a515839a8.

bower.json

@@ -24,7 +24,7 @@
   ],
   "private": false,
   "dependencies": {
-    "amber": ">0.16.0",
+    "amber": ">=0.15.0",
     "amber-contrib-jquery": ">=0.2.0"
   },
   "devDependencies": {