chore(package): Upgrade xstream to 11.0.0

Author: olpeh

package.json

@@ -62,7 +62,7 @@
     "typescript": "^2.4.2",
     "uglify-js": "^3.0.12",
     "validate-commit-message": "^3.0.1",
-    "xstream": "^10.8.0"
+    "xstream": "^11.0.0"
   },
   "lint-staged": {
     "{test,src}/**/*.{js,jsx,ts,tsx}": [