Merge branch 'next' into switch-to-ts

Author: phryneas

package.json

@@ -74,9 +74,10 @@
     "npm-run-all": "4.1.5",
     "prettier": "1.18.2",
     "prop-types": "15.7.2",
-    "react": "^16.11.0",
-    "react-dom": "^16.11.0",
-    "storybook-chromatic": "3.0.3",
+    "react": "16.11.0",
+    "react-async": "9.0.0",
+    "react-dom": "16.11.0",
+    "storybook-chromatic": "3.0.3"
     "typescript": "3.6.4"
   }
 }