chore(*): Add changelog.

Author: MKirova

CHANGELOG.md

@@ -2,6 +2,14 @@
 
 All notable changes for each version of this project will be documented in this file.
 
+## 10.1.0
+
+### General
+- `igxGrid`
+    - Added `onScroll` event, which is emitted when the grid is scrolled vertically or horizontally.
+- `igxTreeGrid`
+    - Removed `onDataPreLoad` event as it is specific for remote virtualization implementation, which is not supported for the `igxTreeGrid`. A more generic `onScroll` event is exposed and can be used instead.
+
 ## 10.0.0
 
 ### General