Update dependencies

Author: garyb

bower.json

@@ -22,8 +22,8 @@
     "purescript-maybe": "~0.2.1",
     "purescript-foreign": "~0.4.0",
     "purescript-node-buffer": "~0.0.1",
-    "purescript-node-path": "~0.2.0",
-    "purescript-datetime": "~0.4.0",
+    "purescript-node-path": "~0.3.0",
+    "purescript-datetime": "~0.5.0",
     "purescript-exceptions": "~0.2.1"
   }
 }