Mark package as tree shakeable

package.json

@@ -1,6 +1,6 @@
 {
   "name": "wastedrendersdetector",
-  "version": "2.0.0",
+  "version": "2.0.1",
   "author": "Microsoft Corp.",
   "description": "Tool to debug wasted renders",
   "main": "lib/index.js",
@@ -26,5 +26,6 @@
     "@types/react": ">=16.0.0",
     "react": ">=16.0.0",
     "typescript": "^3.3.1"
-  }
+  },
+  "sideEffects": false
 }