Add changelog for new manual scrolling additions

#81

Author: emilk

CHANGELOG.md

@@ -9,6 +9,10 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ## Unreleased
 
+### Added ⭐
+
+* Add `ui.scroll_to_cursor` and `response.scroll_to_me` ([#81](https://github.com/emilk/egui/pull/81) by [lucaspoffo](https://github.com/lucaspoffo)).
+
 ### Changed 🔧
 
 * Renamed `FontFamily::VariableWidth` to `FontFamily::Proportional`.