wundergroundpws v2.X.X is a redesigned integration and not an upgrade to earlier versions.
SEE Upgrade section of v2.X.X README for upgrade instructions.
https://github.com/cytech/Home-Assistant-wundergroundpws/tree/v2.X.X#upgrade
v2.0.1
- add user-agent to config_flow (error on docker installation)
- Redesign sensors - BREAKING CHANGE - no upgrade path from earlier versions
- move integration to config_flow