Fix sensor scaling

• Fix for via HA Core issue #44349
• Remove aiohttp-workaround - issue solved in aiohttp 3.7.1

Keep backwards compatibility

Merge pull request #47 from plugwise/passwdfix

Update changelog

Bug-fix, add model-info to output, code and test improvements

• Switch Smile to defusedxml from lxml (improving security)
• Lint and flake recommendations fixed
• Project CI changes
• Bug-fix: fix use of major due to change of using semver.VersionInfo.
• Add model-info: to be used in Core to provide a more correct model-name for each device.
• Code improvements and increase in test-coverage.

Standardize logging for stick

Merge pull request #22 from plugwise/release-0.8.1

Bump to v0.8.1

Merging Plugwise-Smile and python-plugwise

Plugwise-Smile (by @CoMPaTech and @bouwew) and python-plugwise (by @brefra) have been merged into plugwise, picking up and continuing the work done by @cyberjunky and other predecessors.