Bug Fixes
- Check that clean area is not a str
([230](https://github.com/Python-roborock/python-roborock/pull/230),
[`e66a91e`](https://github.com/Python-roborock/python-roborock/commit/e66a91edaf6fedf5d4b2ab9117b7759295add492))
Chores
- Add some async improvements ([229](https://github.com/Python-roborock/python-roborock/pull/229),
[`e987c17`](https://github.com/Python-roborock/python-roborock/commit/e987c17ee65982c7179f4d94a84e1863aa4830da))
* chore: add some async improvements
* chore: improve get_rand_int