Improvements to HA integration; removal of core config handling

Breaking Changes

• Remove configuration handling from core library (use https://xknx.io/config-converter)

Devices

• Add support for cover lock
• ExposeSensor values can now be read from other xknx devices that share a group address
• Add more information to sensors and binary sensors in the HA integration

Internals

• Drop support for python 3.7
• use pytest tests instead of unittest TestCase
• Move RequestResponse and subclasses to xknx.io.request_response.*
• Move ConnectionConfig to xknx.io.connection
• Store last Telegram and decoded value in RemoteValue
• Improve CI to use Codecov instead of Coveralls for code coverage reports

Add support for unique ids

HA integration

• Add support for unique ids

Internals

• Remove unfinished config v2

Bugfix for ValueReader

Internals

• Comparing GroupAddress or IndividualAddress to other types don't raise TypeError anymore
  This caused errors when Point-to-point Telegrams were received while the TelegramQueue had match-all-callbacks (ValueReader)
• Specify some type annotations

Passive addresses

Devices

• Accept lists of group addresses using the heads for group_address / group_address_state and the tails for passive_group_addresses in every Device (and RemoteValue)
• Sensor: Don't allow floats in DPTBase value_type parser

Internals

• type annotation fixes

Value templates

Devices

• BinarySensor, Sensor: add ha_value_template attribute to store HomeAssistant value templates

Internals

• Distribute type annotations in package

Cover up

Devices

• Cover: Use correct step direction when stopping

Internals

• Convert all Enums to upper case to satisfy pylint

Route back

New Features

• Add new optional config route_back for connections to be able to work behind NAT.
• Read env vars after reading config file to allow dynamic config.

HA integration

• knx_event: fire also for outgoing telegrams

Devices

• BinarySensor: return None for BinarySensor.counter when context timeout is not used (and don't calculate it)
• Climate: Add create_temperature_sensors option to create dedicated sensors for current and target temperature.
• Weather (breaking change!): Renamed expose_sensors to create_sensors to prevent confusion with the XKNX expose_sensor device type.
• Weather: Added wind bearing attribute that accepts a value in degrees (0-360) for determining wind direction.

Internals

• RemoteValue is Generic now accepting DPTArray or DPTBinary
• split RemoteValueClimateMode into RemoteValueControllerMode and RemoteValueOperationMode
• return the payload (or None) in RemoteValue.payload_valid(payload) instead of bool
• Light colors are represented as Tuple[Tuple[int,int,int], int] instead of Tuple[List[int], int] now
• DPT 3 payloads/values are not invertable anymore.
• Tunnel: Interface changed - gateway_ip, gateway_port before local_ip, local_port added with default 0.
• Tunnel: default auto_reconnectto True

Fan contributions

Devices

• Fan: Add max_step attribute which defines the maximum amount of steps. If set, the fan is controlled by steps instead of percentage.
• Fan: Add group_address_oscillation and group_address_oscillation_state attributes to control the oscillation of a fan.

Bugfix for yaml loader

• fix conflict with HA Yaml loader

HA register services

HA integration

• knx_event: renamed fire_event_filter to event_filter and deprecated fire_event config option. A callback is now always registered for HA to be able to modify its group_addresses filter from a service.
• added knx.event_register service allowing to add and remove group addresses to trigger knx_event without having to change configuration.
• added knx.exposure_register service allowing to add and remove ExposeSensor instances at runtime

Internals

• remove DPTComparator: DPTBinary and DPTArray are not equal, even if their .value is, and are never equal to None.
• add Device.shutdown() method (used eg. when removing ExposeSensor)
• TelegramQueue.Callback: add group_addresses attribute to store a list of GroupAddress triggering the callback (additionally to address_filters).
• add a lot of type annotations