* merge PR #1069 make MqTT client ID configurable
* fix#1016, general MqTT status depending on inverter state machine
* changed icon for fully available inverter to a filled check mark #1070
* fixed `last_success` update with MqTT #1068
* removed `improv` esp-web-installer script, because it is not fully functional at this time
* merge PR #1056, visualization html
* update MqTT library to 1.4.4
* update RF24 library to 1.4.7
* update ArduinoJson library to 6.21.3
* set minimum invervall for `/live` to 5 seconds
Warning: old exports are not compatible any more!
further save settings improvements (only store inverters which are existing)
improved display of settings save return value
made save settings asynchronous (more heap memory is free)
fix add inverter `setup.html` #766
fix MQTT retained flag for total values #726
renamed buttons for import and export `setup.html`
added serial message `settings saved`
added part of mac address to MQTT client ID to seperate multiple ESPs in same network
added dictionary for MQTT to reduce heap-fragmentation
removed `last Alarm` from Live view, because it showed always the same alarm - will change in future
fix blue LED lights up all the time #672
fix installing schedulers if NTP server isn't available
improved zero values on triggers #671
hardcoded MQTT subtopics, because wildcard `#` leads to errors
rephrased some messages on webif, thx to @Argafal#638
reenabled FlashStringHelper because of lacking RAM
complete rewrite of monochrome display class, thx to @dAjaY85 -> displays are now configurable in setup
improved `isAvailable`, checkes all record structs, inverter becomes available more early because version is check first
fix tickers were not set if NTP is not available
disabled annoying `FlashStringHelper` it gives randomly Expeptions during development, feels more stable since then
moved erase button to the bottom in settings, not nice but more functional
split `tx_count` to `tx_cnt` and `retransmits` in `system.html`
fix mqtt retransmit IP address #602
added debug infos for `scheduler` (web -> `/debug` as trigger prints list of tickers to serial console)
fix Prometheus and JSON endpoints (`config_override.h`) #561
publish MQTT with fixed interval even if inverter is not available #542
added JSON settings upload. NOTE: settings JSON download changed, so only settings should be uploaded starting from version `0.5.70` #551
MQTT topic and inverter name have more allowed characters: `[A-Za-z0-9./#$%&=+_-]+`, thx: @Mo Demman
improved potential issue with `checkTicker`, thx @cbscpe
MQTT option for reset values on midnight / not avail / communication stop #539
small fix in `tickIVCommunication` #534
add `YieldTotal` correction, eg. to have the option to zero at year start #512
fix Prometheus and JSON endpoints (`config_override.h`) #561
publish MQTT with fixed interval even if inverter is not available #542
added JSON settings upload. NOTE: settings JSON download changed, so only settings should be uploaded starting from version `0.5.70` #551
MQTT topic and inverter name have more allowed characters: `[A-Za-z0-9./#$%&=+_-]+`, thx: @Mo Demman
improved potential issue with `checkTicker`, thx @cbscpe
MQTT option for reset values on midnight / not avail / communication stop #539
small fix in `tickIVCommunication` #534
add `YieldTotal` correction, eg. to have the option to zero at year start #512
added SH1106 to automatic build
added IP address to MQTT (version, device and IP are retained and only transmitted once after boot) #556
added `set_power_limit` acknowledge MQTT publish #553
changed: version, device name are only published via MQTT once after boot
added `Login` to menu if admin password is set #554
added `development` to second changelog link in `index.html` #543
added interval for MQTT (as option). With this settings MQTT live data is published in a fixed timing (only if inverter is available) #542, #523
added MQTT `comm_disabled` #529