Add constants

What's Changed

• Add constants and improve update_state_data by @jbouwh in #3

Full Changelog: v0.1.1...v0.1.2

Initial release

What's Changed

• Initial version lib-elro-connects API by @jbouwh in #1
• fix setup checks python 3.9 minimal

Full Changelog: https://github.com/jbouwh/lib-elro-connects/commits/v0.1.1-4