* remove impossible test
IndividualAddress telegrams are not processed by xknx.telegram_queue
* Use Telegrams helper class for group monitor messages
* Store 50 telegrams in deque for group monitor
* Send recent telegrams at once on connection of group monitor
* Update KNX-frontend to support group monitor prepopulation
* telegram device trigger initial
* add Telegrams helper class
to parse and convert Telegram only once instead of once per device trigger
* translation
* label for extra_field
* test device trigger
* test trigger callback removal
* rename extra_field key to same name as used in trigger
* typo
