release 0.5.2

Author: dfreedm

bower.json

@@ -2,8 +2,9 @@
   "name": "core-iconset",
   "private": true,
   "dependencies": {
-    "polymer": "Polymer/polymer#master",
-    "core-meta": "Polymer/core-meta#master",
-    "core-icon": "Polymer/core-icon#master"
-  }
-}
+    "polymer": "Polymer/polymer#^0.5.0",
+    "core-meta": "Polymer/core-meta#^0.5.0",
+    "core-icon": "Polymer/core-icon#^0.5.0"
+  },
+  "version": "0.5.2"
+}