fix(core): update

ts_web/elements/dees-input-dropdown.ts

@@ -1,5 +1,4 @@
 import { customElement, LitElement, TemplateResult, property, html } from 'lit-element';
-
 import * as domtools from '@designestate/dees-domtools';
 
 declare global {
@@ -12,6 +11,9 @@ declare global {
 export class DeesInputDropdown extends LitElement {
   public static demo = () => html`<dees-input-dropdown></dees-input-dropdown>`
 
+  // INSTANCE
+  public changeSubject = new domtools.rxjs.Subject();
+
   @property()
   public label: string = 'Label';
 
@@ -116,6 +118,7 @@ export class DeesInputDropdown extends LitElement {
       bubbles: true
     }));
     this.toggleSelectionBox();
+    this.changeSubject.next(this);
   }
 
   public toggleSelectionBox() {