Upgrade to Telepath 0.45.0 for references and to debug #1153

I downgraded back to 0.38.0 after a brief period on 0.44.0 in which I
saw issues. 0.44.0 is a pretty big jump that introduces reference
semantics. I've since only seen issue #1153, which @mcolyer saw at
version 0.38.0 as well. 0.45.0 throws an exception at the moment I think
markers are getting into a bad state, so hopefully it should help us
debug the problem.

package.json

@@ -35,7 +35,7 @@
     "season": "0.14.0",
     "semver": "1.1.4",
     "space-pen": "2.0.0",
-    "telepath": "0.38.0",
+    "telepath": "0.45.0",
     "temp": "0.5.0",
     "underscore-plus": "0.3.0"
   },