Update changelog

Author: sbcgua

changelog.txt

@@ -15,6 +15,7 @@ v1.?.?, ?
 + Docusaurus docs (#203)
 + Improvement to docs (#214,#215,#216, @mbtools)
 * Refactor regex usage to include ##REGEX_POSIX pragma (#217, @mbtools)
+* Suppress low perfromance warnings with pseudo comment (#219, @oblomov-dev)
 
 v1.1.13, 2025-09-19
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