Push imports complete RxJS library

[procrafts]

Contrary to the suggestion from RxJS, this module imports the complete RxJS library. It should only import the parts that are used as explained here: https://github.com/ReactiveX/rxjs

I noticed it because I could use all operators from RxJS in my Ionic 3 app without importing them. The only import from RxJS I used in my app was:
import { Observable } from 'rxjs/Observable';

After I commented out the following imports, I got errors because of the missing imports of used RxJS operators:

import { CloudModule, CloudSettings } from '@ionic/cloud-angular';
import { Push, PushToken } from '@ionic/cloud-angular';

I installed the following dependency:
"@ionic/cloud-angular": "0.12.0"
and found in
node_modules/@ionic/cloud-angular/dist/es5/index.js
the following line 22
var rxjs_1 = require("rxjs");
and in
node_modules/@ionic/cloud-angular/dist/esm/index.js
the line 18
import { Observable } from 'rxjs';

I think it should work, if the first line is
var rxjs_1 = require("rxjs/Observable");
and the other line is
import { Observable } from 'rxjs/Observable';

I would be grateful, if somebody could fix this.

[procrafts]

#48 could solve this issue.