Setup immer plugin

Remove unused code

Author: modularcoder

package-lock.json

@@ -16,6 +16,7 @@
     "@material-ui/core": "^4.1.3",
     "@material-ui/icons": "^4.2.1",
     "@rematch/core": "^1.1.0",
+    "@rematch/immer": "^1.1.0",
     "@types/axios": "^0.14.0",
     "@types/chart.js": "^2.7.56",
     "@types/jest": "24.0.15",

package.json

@@ -38,6 +38,7 @@ const model = createModel({
   },
   // dispatch: RematchDispatch
   effects: () => ({
+    // payload, rootState
     async request() {
       this.setStatus({
         loading: true,