Update CHANGELOG.md

Author: jcs090218

CHANGELOG.md

@@ -9,6 +9,7 @@ Check [Keep a Changelog](http://keepachangelog.com/) for recommendations on how
 > Released N/A
 
 * feat: display all code actions of the current diagnostics ([`d380187`](../../commit/d38018745af1140f482decbf36119ca3ee10e503))
+* new function to allow advising sideline lsp icons ([#4](../../pull/4))
 
 ## 0.1.0
 > Released Jun 21, 2022