Update changelog.md

kakopappa · web-flow · commit 288b06c70d8f · 2023-10-02T18:22:30.000+07:00
diff --git a/changelog.md b/changelog.md
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 # Changelog
 ## Version 3.1.1
 - BREAKING CHANGE: Remove PowerStateController from Air Quality, Contact, Motion and Temperature sensor.
+- Fix examples
+- Default Arduino Serial baudrate changed to 115200
 
 ## Version 2.11.1
 - Support Raspberry Pi Pico W
