changelog for v2.2.1

Author: auvipy

Changelog

@@ -6,12 +6,14 @@
 
 2.2.1
 =====
-:release-date: 2021-05-30 9:00 p.m. UTC+6:00
+:release-date: 2021-07-02 11:15 a.m. UTC+6:00
 :release-by: Asif Saif Uddin
 
 - Enable Django 3.2 CI and add default_auto_field
 - Fix locale in dir tree
 - Do not blindly delete duplicate schedules (#389)
+- used python:3.8-slim for lighter builds
+- Do not blindly delete duplicate schedules (#389)
 
 2.2.0
 =====