Changelog updated.

Author: simzer

CHANGELOG.md

@@ -2,9 +2,16 @@
 
 ## [Unreleased]
 
+### Added
+
 - animate() method returns an animation control object, 
   animation control methods are chainable.
 
+### Fixed
+
+- Marker label fade-in/fade-out fixed, values are interpolated only if measure 
+  is not changed on label channel.
+
 ## [0.3.3] - 2021-10-17
 
 ### Fixed