v0.4.0: Add support for environment tags

Add support for the following:

• EMS59440
• SED-TRH-G-5045
• ZBRTT1
• ESST010B0400
• A9XST114
• EMS59443
• SED-CO2-G-5045

Thanks to @tilentravnik who sponsored a ZBRTT1 device which was used for testing! :)

In this release, the 'Alarm valid' entity has been removed; it will show up as unavailable and may be deleted.