arm64 wheel for Mac M1?

[jonblower]

Hi, I recently came across an issue when installing numcodecs as a dependency of kerchunk on an M1 Mac (via pip). I was aiming to get the latest version (0.10.0) but ended up with 0.7.3, presumably because it was not able to build the latest version. I was then missing the "shuffle" codec. See fsspec/kerchunk#195.

There is a 0.10.0 build in conda-forge that works. Is it possible to make this available via pip please?

[joshmoore]

see: #289 #315
cc: @jakirkham