2.8.0

• Upgrade mqtt to get rid of async-mqtt (#95)
• Remove flaky support for "PRO" unit naming scheme
• Add rudimentary way of differentiating between different automation types
• Disable "heating/cooling allowed" on legacy EDA units, fixes crash (#105)
• Disable "eco" mode switch on older units (#104)
• Add optional sensors for control panel temperature, supply fan speed and exhaust fan speed (#96)
• Remove references to "flags", use "modes" everywhere instead
• Use HTTP 500 instead of HTTP 400 for generic errors
• Add settings switch for defrosting allowed (#109)