Update CHANGELOG.md

Author: whitphx

CHANGELOG.md

@@ -3,6 +3,10 @@ All notable changes to this project will be documented in this file.
 
 ## [Unreleased]
 
+## [0.17.0] - 2023-08-20
+### CHANGE
+- Drop Python 3.7 support, #199.
+
 ## [0.16.1] - 2023-06-17
 ### Fix
 - Support Python 3.11, #188.