update CHANGELOG.md

Author: dvlpr1996

CHANGELOG.md

@@ -2,6 +2,20 @@
 
 All notable changes to `dvlpr1996/php-string-helpers` will be documented in this file
 
+## 1.0.0 (2022-12-18)
+
+Add new methods : 
+
+- StrUtility::rmLastWord(string $string)
+
+- StrUtility::rmFirstWord(string $string)
+
+- StrUtility::is_slug(string $slug)
+
+Change how to use StrUtility::translate() and StrUtility::filePath()
+
+Improve display of errors
+
 ## 0.1.1 (2022-12-05)
 
 - fix project root path bug in translate() and filePath()