Hi,
thanks a lot for this great project!
I was able to install pybluez on 10.14.3 by manually applying a yet unmerged PR:
git clone https://github.com/pybluez/pybluez
cd pybluez
curl https://patch-diff.githubusercontent.com/raw/pybluez/pybluez/pull/223.patch | patch -p1
python3 setup.py install

