Bump version of pg-types

Author: brianc

package.json

@@ -24,7 +24,7 @@
     "nan": "1.3.0",
     "packet-reader": "0.2.0",
     "pg-connection-string": "0.1.3",
-    "pg-types": "1.5.0",
+    "pg-types": "1.6.0",
     "pgpass": "0.0.3"
   },
   "devDependencies": {