Sensor-state-data

Feature
* New device classes for new sensor types ([31](https://github.com/Bluetooth-Devices/sensor-state-data/issues/31)) ([`35c47b2`](https://github.com/Bluetooth-Devices/sensor-state-data/commit/35c47b2628d600e9fcabf35a38b8747abdd3181c))

Feature
* New sensor types ([30](https://github.com/Bluetooth-Devices/sensor-state-data/issues/30)) ([`883235e`](https://github.com/Bluetooth-Devices/sensor-state-data/commit/883235e2584d0e0cab66577c6a1acd863b3e9049))

Fix
* Unit of measurement voc ([29](https://github.com/Bluetooth-Devices/sensor-state-data/issues/29)) ([`6e8a65e`](https://github.com/Bluetooth-Devices/sensor-state-data/commit/6e8a65ecf08cb80c79a101892cf076de5974e283))

Fix
* Add pm units ([28](https://github.com/Bluetooth-Devices/sensor-state-data/issues/28)) ([`3df28b5`](https://github.com/Bluetooth-Devices/sensor-state-data/commit/3df28b5d5654632e91c78fc1fd7b09fc4ad1bfab))

Feature
* New base sensors ([27](https://github.com/Bluetooth-Devices/sensor-state-data/issues/27)) ([`b7637bf`](https://github.com/Bluetooth-Devices/sensor-state-data/commit/b7637bf725a12fdf0f358a52c94eda54b89303c6))

Feature
* Add set_precision convenience method ([26](https://github.com/Bluetooth-Devices/sensor-state-data/issues/26)) ([`0937284`](https://github.com/Bluetooth-Devices/sensor-state-data/commit/0937284a66bd9b2494817aa0402235cd1635d0f3))