• Update dependancies for security fixes
• Updates to build with Go 1.20

• Update to use Go 1.18
• Allow setting the refresh frequency
• Add support for setting required attributes via environment variables
• Add monitoring of powerpal response time to metrics

v0.2.1 is the same as v0.2.0 just with updates to the CircleCI config to build docker images automatically.

Initial release of Powerpal exporter.

Works with a single powerpal device. Has lots of rough edges, was made in a couple of hours on a Friday afternoon while learning Go