The build wasn't working for python 3.9 because tp_print was
deprecated but it was trying to use the already generated dubins.c file.
To fix this, I added a pyproject.toml file that guarantees that Cython
is available and I switched to using the cythonize call in order to
skip using a pre-generated dubins/dubins.c file.
The build wasn't working for python 3.9 because
tp_printwas deprecated but it was trying to use the already generated dubins.c file. To fix this, I added a pyproject.toml file that guarantees that Cython is available and I switched to using thecythonizecall in order to skip using a pre-generateddubins/dubins.cfile.