switch back to older dev-dependencies, because grunt-typescript uses them too

Author: nitram509

package.json

@@ -42,15 +42,15 @@
   },
   "devDependencies": {
     "expect.js": "~0.3.1",
-    "grunt": "~1.0.1",
-    "grunt-cli": "~1.2.0",
-    "grunt-contrib-clean": "^1.0.0",
-    "grunt-contrib-copy": "^1.0.0",
-    "grunt-contrib-watch": "^1.0.0",
+    "grunt": "~0.4.5",
+    "grunt-cli": "~0.1.13",
+    "grunt-contrib-clean": "^0.6.0",
+    "grunt-contrib-copy": "^0.8.0",
+    "grunt-contrib-watch": "^0.6.1",
     "grunt-mocha-test": "^0.13.2",
-    "grunt-typescript": "^0.8.0",
+    "grunt-typescript": "^0.6.1",
     "mocha": "^3.2.0",
-    "typescript": "^2.1.6"
+    "typescript": "^1.6.2"
   },
   "directories": {
     "lib": "./lib"