release 0.3.1

Author: dfreedm

bower.json

@@ -1,8 +1,8 @@
-{
-  "name": "core-list",
-  "private": true,
-  "dependencies": {
-    "polymer": "Polymer/polymer#master",
-    "core-selection": "Polymer/core-selection#master"
-  }
-}
+{
+  "name": "core-list",
+  "private": true,
+  "dependencies": {
+    "polymer": "Polymer/polymer#>=0.3.0 <1.0.0",
+    "core-selection": "Polymer/core-selection#>=0.3.0 <1.0.0"
+  }
+}