Update dev dependencies.

Author: Christian Wesselhoeft

package.json

@@ -29,15 +29,14 @@
     "typescript"
   ],
   "devDependencies": {
-    "grunt": "~0.4.1",
-    "grunt-contrib-concat": "~0.3.0",
-    "grunt-contrib-connect": "~0.5.0",
-    "grunt-contrib-copy": "~0.5.0",
-    "grunt-contrib-clean": "~0.5.0",
+    "grunt": "^0.4.1",
+    "grunt-contrib-clean": "^0.5.0",
+    "grunt-contrib-concat": "^0.4.0",
+    "grunt-contrib-connect": "^0.7.1",
+    "grunt-contrib-copy": "^0.5.0",
     "grunt-contrib-jshint": "^0.9.2",
-    "grunt-contrib-uglify": "~0.3.3",
-    "lodash": "~2.2.1",
-    "grunt-text-replace": "~0.3.11",
+    "grunt-contrib-uglify": "^0.4.0",
+    "grunt-text-replace": "^0.3.11",
     "load-grunt-config": "~0.8.0-beta.1"
   }
 }