embedded bnlib is incompatibly licensed #40
Description
ZRTPCPP is licensed as GPL 3 or newer, but links with bnlib which - according to bnlib/legal.c - is GPL 2 (no newer).
It seems that linking with bnlib is only possible if main project is relicensed as the less strict GPL 2 or newer (leading to the effective license of linked code to be GPL 2).