Calendar version scheme

Changed to calendar version scheme and added version to manifest (is now required for custom integrations).

Scale factor

It is possible to configure a scale factor of currents, power and energy measurements. Some meters are known to to not be connected directly to main power, but through a current transformer with a reduction factor of 50.

0.2

Fixed lgtm warnings

Logging and error messages

v0.1.5

Error messages and logging

v0.1.4

Merge branch 'master' of https://github.com/toreamun/amshan-homeassis…

v0.1.3

Update manifest.json

Updated dependency

v0.1.2

Update manifest.json

v0.1.1

Added logging to _async_validate_connection

v0.1

fiex imports