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
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
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
added `/` to MQTT topic and Inverter name
trigger for `calcSunrise` is now using local time #515
fix reconnect timeout for WiFi #509
start AP only after boot, not on WiFi connection loss
improved /system `free_heap` value (measured before JSON-tree is built)
improved wifi initial connection - especially if station wifi is not available #509
removed new operators from web.h (reduce dynamic allocation)
improved sun calculation #515, #505
fixed wifi auto reconnect #509
added disable night communication flag to MQTT #505
changed MQTT publish of `available` and `available_text` to sunset #468
added icons to index.html, added wifi-strength symbol on each page
moved packet stats and sun to system.html
refactored communication offset (adjustable in minutes now)
