MAX! Heating control

Provides a simpler user interface for the heating system. Requires an account on the internet portal from eQ-3 or ELV.

Compatible with onlie portals from:
* eQ-3: https://max.eq-3.de
* ELV: https://www.max-portal.elv.de
* mobilcom: debitel https://smarthome.md.de

Features:
* Display of current temperature
* Notification on connection problems or low battery
* Notification when windows are open
* Graph with temperature history
* Automatic change to auto mode after configured time
* Support for multiple Cubes
* Detailed display of technical status values for all MAX! devices