update changelog for v1.7.3
+### 1.7.3
+
+- Bugfix: IRedis can be suspended by <kbd>Ctrl</kbd> + <kbd>Z</kbd>. (Thanks
+ [wooden-robot])
+- Bugfix: Press <kbd>Enter</kbd> when completion is open will not execute
+ commands. (Thanks [wooden-robot])
+
### 1.7.2
- Feature: Support `ACL` ( [#340](https://github.com/laixintao/iredis/pull/343)
