* Xiaomi Mi Air Humidifier CA4 (zhimi.humidifier.ca4) (@Toxblh)

Improvements:
* S5 vacuum: adjustable water volume for mopping
* Gateway: improved light controls (@starkillerOG)
* Chuangmi Camera: improved home monitoring support (@impankratov)

Fixes:
* Xioawa E25: do not crash when trying to access timers
* Vacuum: allow resuming after error in zoned cleanup (@r4nd0mbr1ck)

[Full Changelog](https://github.com/rytilahti/python-miio/compare/0.5.2.1...0.5.3)