Update to React 16.6.0

Author: dustinsoftware

src/React.Core/package.json

@@ -12,8 +12,8 @@
     "gulp-uglify": "~1.5.3",
     "json-loader": "~0.5.4",
     "prop-types": "~15.6.0",
-    "react": "^16.5.2",
-    "react-dom": "^16.5.2",
+    "react": "~16.6.0",
+    "react-dom": "~16.6.0",
     "vinyl-named": "~1.1.0",
     "webpack": "~1.13.1",
     "webpack-stream": "~3.2.0"