Bugfix: mqttsn - underflow buffer on retry with array variables
Bugfix: twi - use unallocated memory
Bugfix: ARM UART - unhandled exception on HW buffer overflow
Added: ENC28J60 DHCP
Updated README
Changed UART-PHY Protocol, !! NOT COMPATIBLE WITH OLD VERSIONS
Bugfix MQTT-SN premature release publish buffer
Bugfix TWI/I2C used unallocated memory
Added User Serial port
Updated Atmel devices description file