v2.7: Fixed ItrTrigger state

Merge pull request #2 from Metaln00b/bugfix/itrtrigger-issue

bugfix: Reset state ItrTrigger after sending

v2.6: Fixed unnecessary duty cycle delay

- Second attempt to fix unnecessary duty cycle delay
- Re-extended debug messages
- Updated README

v2.5: Fixed problems with deepsleep inaccuracy and duty cycle limitation

- Fixed problem with duty cycle limitation
- Fixed MCU deepsleep inaccuracy

v2.4: Improvements in interrupt handling and ADR

• Allows interruption while awake
• Enabled ADR explicit
• Enabled link check validation

v2.2: Added random send delay

- An additional send delay between 0 and 20s has been added to avoid overlaps between different nodes with exactly the same send interval
- Some Flash memory optimizations

v2.1: Better serial debug

- Improved (debug) logging to serial output
- BME sends -127°C (link DS18x) if no sensor was found

v2.0: Added wake up trough interrupt pins

- Added option for disable interrupt pins
- Added option for confirmed uplink
- Changed LoRaWAN data up message

v1.1

Unmerged CI scripts

v1.0

Merged CI scripts