v1.1.0

- Fixed bug 'no TX on radio B' (rfch 1)
- Added feature: concentrator processing delay compensation in the receive() function for accurate 'end of packet' even timestamping
- Added feature: TX 'start delay' compensation in the send() function to emit packet exactly on target timestamp
- Added feature: timestamp counter verification in send() function, return an error if scheduling was too late
- Switched license to 'Revised BSD'