v2.9.9

- Added Class-B support, as defined in LoRaWAN v1.1
- Added downlink "just-in-time" scheduling to optimize downlink capacity
- Merged all different flavours of packet forwarder into one unique lora_pkt_fwd
- Updated Gateway <-> NetworkServer protocol ti describe the new format of "time" field.

** WARNING **
** This version is an experimental release for Class-B support.

** KNOWN LIMITATIONS/BUGS **
** - Not compatible with iot.semtech.com due to protocol change (see PROTOCOL.txt).
   - Does not support 27dBm design (with FPGA), not yet merged with master branch.
   - The beacon preamble length should be set to 10 instead of 6.
   - The "immediate" mode for downlink is not working anymore.

v1.4.1

- Bugfix: fixed LP-116, fdev parameter parsed incorrectly, making FSK TX fail.
- Bugfix: fixed a platform-dependant minor rounding issue.
- Beta: updated beacon format, partially aligned with latest class B proposal.

v1.4.0

- Feature: Adding TX FSK support.
- Feature: optional auto-quit if a certain number of PULL_ACK is missed.
- Feature: upstream and downstream ping time is displayed on console.
- Bugfix: some beacons were missed at high beaconing frequency.
- Bugfix: critical snprintf error caused a crash for long payloads.
- FSK bitrate now appears in the upstream JSON.

v1.3.0

- Feature: adding preliminary beacon support for class B development.
- Solved warnings with 64b integer printf when compiling on x86_64.
- Updated build system for easier deployment on various hardware.
- Changed threads organization in the forwarder programs.
- Removed duplicate protocol documentation.