Added
* Add argument `--save-stats` allowing to compute dataset statistics and save them as an `.npz` file ([80](https://github.com/mseitzer/pytorch-fid/pull/80)). The `.npz` file can be used in subsequent FID computations instead of recomputing the dataset statistics. This option can be used in the following way: `python -m pytorch_fid --save-stats path/to/dataset path/to/outputfile`.
Fixed
* Do not use `os.sched_getaffinity` to get number of available CPUs on Windows, as it is not available there ([232b3b14](https://github.com/mseitzer/pytorch-fid/commit/232b3b1468800102fcceaf6f2bb8977811fc991a), [#84](https://github.com/mseitzer/pytorch-fid/issues/84)).
* Do not use Inception model argument `pretrained`, as it was deprecated in torchvision 0.13 ([88](https://github.com/mseitzer/pytorch-fid/pull/88)).