More EU DR6 corrections and ADR back off - UNTESTED

1. Downlinks on EU DR6 are not working. Investigating. TTN supports EU DR6, Helium does not.
2. Some better ADR back off code but it's UNTESTED

Update erase session utility

0.6.10

Update example

SF7BW250 support and NbTrans public

1. EU DR6 aka SF7BW250 support.
2. Moved NbTrans variables to public
   2b. application can know with if NbTrans_counter == NbTrans that we can send new message.

Version bump

Sorry for that, still confusing git and tags..

Margin report in device status must be ok now

1. Margin report in device status must be ok now
2. EPIC bug with #endif in LORAWAN_KEEP_SESSION in RfmSendPacket function fixed.
3. Debug is less verbose, but again verbose.

Handle null port on downlink - try to resurrect platformio

1. Handle null port on
2. Now, probably MAC commands with donwlink data must be
3. Platformio is stuck at version 0.1.9 for some reason. Added library.json in hope that will
4. Changed the interface of functions to store frame counter data.

Some gremlins for downlink data to be checked

I am not sure that everything is fine if MAC commands are mixed with application data.

NOT FULLY TESTED - Bug fix release

UNTESTED: RX2 DR window.

Important bug fix release with buffer overflow protection on downlink. Also added an example with downlink. Both tested and working.

EEPROM had empty bytes, NbTrans, ChMask.

Major Release that breaks previous sessions stored on EEPROM. Erase your EEPROM with 0xFF before use. You need to re-join*. ChMask is now applied. ChMask and NbTrans are now stored on EEPROM

• if you have the nerves, retrieve the keys and restore them to the new locations.

Major release: Support for Downlinks, NbTrans and more!

Now you can talk to your device via LoRaWAN!