chore(changelog): update the changelog

Author: simeonoff

CHANGELOG.md

@@ -1,7 +1,10 @@
-# Ignite UI for Angular Change Log
+# Ignite UI for Angular Change Log
 
 All notable changes for each version of this project will be documented in this file.
 
+## 8.2.1
+- `IgxTextHighlightDirective` - The default highlight directive styles have been moved to a Sass theme - `igx-highlight-theme`; You can modify the resting and active background and text color styles of the directive by passing the respective properties to the Sass theme. You can still pass your own CSS classes to the highlight directive via the cssClass and activeCssClass inputs.
+
 ## 8.2.0
 ### New theme
 Ignite UI for angular now have a new theme that mimics Microsoft "Fluent" design system.  

projects/igniteui-angular/src/lib/directives/text-highlight/text-highlight.directive.ts

@@ -10,7 +10,6 @@ import {
     Renderer2,
     SimpleChanges,
     AfterViewChecked,
-    HostBinding
 } from '@angular/core';
 import { takeUntil } from 'rxjs/operators';
 import { Subject } from 'rxjs';