v1.3.13

Supported python versions are 3.9, 3.10, 3.11, 3.12

migrate from setup.py to pyproject.toml

includes support in virtual environment out of the box

the original mkl_fft.rfft and mkl_fft.irfft are renamed to mkl_fft.rfftpack and mkl_fft.irfftpack,
since they replicate the behavior from the deprecated scipy.fftpack module.

mkl_fft.rfft_numpy, mkl_fft.irfft_numpy, mkl_fft.rfft2_numpy, mkl_fft.irfft2_numpy,
mkl_fft.rfftn_numpy, and mkl_fft.irfftn_numpy are renamed to mkl_fft.rfft, mkl_fft.irfft,
mkl_fft.rfft2, mkl_fft.irfft2, mkl_fft.rfftn, and mkl_fft.irfftn, respectively.
(consistent with numpy.fft and scipy.fft modules)

file _scipy_fft_backend.py is renamed to _scipy_fft.py since it replicates scipy.fft module
(similar to file _numpy_fft.py which replicates numpy.fft module)