fix(core): update

ts/index.ts

@@ -2,6 +2,7 @@ import { CssManager } from './dees-element.classes.cssmanager.js';
 
 // lit exports
 export { html, TemplateResult, css, unsafeCSS, render } from 'lit';
+export { unsafeHTML } from 'lit/directives/unsafe-html.js';
 
 export { customElement } from 'lit/decorators/custom-element.js';