- API: change memory allocation for payload, they are now part of the struct for TX/RX, no need to malloc/free
- reduced number of SPI transactions to fetch a packet (improved number a packets par second that can be downloaded from gateway)
- streamlined build process, main target is now a static library: libloragw.a
- All RX chains can use any of the two radios now
- FSK is available and working in TX and RX (variable length mode)
- Calibrated RSSI for FSK
- lgw_connect now check the CHIP_ID
- Added a license file and a changelog
- Added a function returning a version string to allow identification of the version/options once compiled

- updated firmwares and registers to new IP revision (VERSION = 103, bistream r986)
- recalibrated RSSI
- updated registers configuration
- updated size for firmware code memory
- changed TX status code symbols

- now supports 'native' Linux /dev/spi* interface and SPI-over-USB using FTDI bridge through libmpsse
- Flexible build system, with library.cfg file to set Makefile options
- removed 500 kHz bandwidth limitation on radios, pushed it to the nominal 800kHz usable bandwidth
- RSSI calibrated fo Lora multi-datarate channels

- modified 'native' SPI module to align with the way resource pointers are managed in 'ftdi' variant (void pointers)
- better check of channel frequency + bandwidth vs. authorized band
- improved Makefile

- updated firmwares and registers to new IP revision (VERSION = 101)
- added CHIP_ID
- added function to get TX status

- added code for ppm_offset management (activated when symbol length > 16 ms)
- removed temporarily TX polarity management
- added macro for variable checking (range and/or valid symbolic value)
- renamed variables & macros

- code cleanup and formating
- variable and constants renaming
- TX polarity management
- fixed bugs thanks to Joe Knapp feedback