Maintenance/allow pyfftw0.13.0build0
This allows pyfftw 0.13.0 build 0 to be included into the conda builds. Newer builds are still broken due to https://github.com/pyFFTW/pyFFTW/issues/294.
Edited by Daniel Scheffler
This allows pyfftw 0.13.0 build 0 to be included into the conda builds. Newer builds are still broken due to https://github.com/pyFFTW/pyFFTW/issues/294.