update CHANGELOG.md

Author: ufechner7

CHANGELOG.md

@@ -1,8 +1,11 @@
 # Changelog
-### Unreleased
+### KiteViewers v0.4.20 - 2024-11-09
 #### Fixed
 - fix display of kite in one point model
 - fix function `save_png(viewer)`; it uses the folder `video` as output now
+#### Changed
+- now v_wind_200m and v_wind_kite are displayed as default
+- update_system has now the optional parameter wind=[:v_wind_gnd, :v_wind_200m, :v_wind_kite]
 #### Added
 - add function `install_examples()`
 - add example `reelout_1p.jl`