update changelog

Author: hacknus

CHANGELOG.md

@@ -8,6 +8,8 @@ All notable changes to the `Serial Monitor` crate will be documented in this fil
 * removed many `.clone()` calls to reduce CPU load
 * Fixed sample rate / disconnect issue
 * Releases are now linked to libssl 3.4.1 on linux (built on Ubuntu 22.04)
+* allow to plot only every n-th point (max points is 5000, if dataset is larger, it will reduce it by showing only every
+  2nd point. if it is larger than 10000 only every 3rd point etc...)
 
 ## 0.3.4