Fix downloading data for tomorrow

Changes

• Fixed downloading data for tomorrow (#15)

Improved data download process

Changes

• Improved downloading data for current day (#15)

Improved config flow info

Changes

• Improved info in config flow (#16)

New unit - zł/kWh

Changes

• Added new unit - zł/kWh

Customizable states

Changes

• Added possibility to modify calculation of states
• Fixed handling daylight saving

Future data

Changes

• Added unit selection (#2)
• Fixed retrieving data (#3)

Initial release

Changes

• Initial release