Update changelog.md

Author: weenachuangkud

docs/changelog.md

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 # Changelog
 
 All notable changes to this project will be documented in this file.
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 - Type errors
 - Typo fixes
 - No longer errors now when attempting to index with FastCastEvents with guarding
+- Fixed CanPierce logic
 
 ## [0.0.8] — 2026-02-22
 ### Added