Allow patch level updates

Author: darkriszty

package.json

@@ -33,13 +33,13 @@
     "test": "gulp copy-systemTest-resources && node ./node_modules/vscode/bin/test"
   },
   "devDependencies": {
-    "@types/mocha": "^2.2.48",
-    "@types/node": "^6.0.117",
-    "gulp": "^4.0.0",
-    "mocha": "^5.2.0",
-    "typemoq": "^1.8.0",
-    "typescript": "^2.9.2",
-    "vscode": "^1.1.21"
+    "@types/mocha": "~2.2.48",
+    "@types/node": "~6.0.117",
+    "gulp": "~4.0.0",
+    "mocha": "~5.2.0",
+    "typemoq": "~1.8.0",
+    "typescript": "~2.9.2",
+    "vscode": "~1.1.21"
   },
   "license": "MIT"
 }