S allius/issue128 (#130)

* set Register.NO_INPUTS fix to 4 for GEN3PLUS

* don't set Register.NO_INPUTS per MODBUS

* fix unit tests

* register OUTPUT_COEFFICIENT at HA

* update changelog

* - Home Assistant: improve inverter status value texts

* - GEN3: add inverter status

* on closing send outstanding MQTT data to the broker

* force MQTT publish on every conn open and close

* reset inverter state on close

- workaround which reset the inverter status to
  offline when the inverter has a very low
  output power on connection close

* improve client modified
- reduce the polling cadence to 30s
- set controller statistics for HA

* client mode set controller IP for HA

app/src/modbus.py

@@ -42,7 +42,6 @@ class Modbus():
     map = {
         0x2007: {'reg': Register.MAX_DESIGNED_POWER,   'fmt': '!H', 'ratio':  1},  # noqa: E501
         0x202c: {'reg': Register.OUTPUT_COEFFICIENT,   'fmt': '!H', 'ratio':  100/1024},  # noqa: E501
-        0x203e: {'reg': Register.NO_INPUTS,            'fmt': '!H', 'ratio':  1/256},  # noqa: E501
 
         0x3000: {'reg': Register.INVERTER_STATUS,      'fmt': '!H'},                 # noqa: E501
         0x3008: {'reg': Register.VERSION,              'fmt': '!H', 'eval': "f'V{(result>>12)}.{(result>>8)&0xf}.{(result>>4)&0xf}{result&0xf:1X}'"},  # noqa: E501