backport dependency updates

- range parser 1.0.0
- fresh 0.2.1
- send 0.2.0
- cookie-signature 1.0.3
- merge-descriptors 0.0.2

package.json

@@ -24,15 +24,15 @@
   "dependencies": {
     "connect": "2.12.0",
     "commander": "1.3.2",
-    "range-parser": "0.0.4",
+    "range-parser": "1.0.0",
     "mkdirp": "0.3.5",
     "cookie": "0.1.0",
     "buffer-crc32": "0.2.1",
-    "fresh": "0.2.0",
+    "fresh": "0.2.1",
     "methods": "0.1.0",
-    "send": "0.1.4",
-    "cookie-signature": "1.0.1",
-    "merge-descriptors": "0.0.1",
+    "send": "0.2.0",
+    "cookie-signature": "1.0.3",
+    "merge-descriptors": "0.0.2",
     "debug": ">= 0.7.3 < 1"
   },
   "devDependencies": {