Bump blis/openblas

[h-vetinari]

Carrying over a few commits from #43 (which is stuck on conda-forge/lapack-feedstock#32), and bumping openblas. I had forgotten that blis was still on 0.6.1 here, but @isuruf reminded me - thanks.

[conda-forge-linter]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe) and found it was in an excellent condition.

[h-vetinari]

@conda-forge-admin, please rerender

[h-vetinari]

@isuruf What happened to gfortran_win-64? I haven't touched this part of build.sh and I'm pretty sure this used to work, but now the package isn't found

+ conda.exe create -p /d/bld/blas-split_1593248361043/work/build/_env -c conda-forge --yes --quiet 'libblas=3.8.0=*netlib' 'libcblas=3.8.0=*netlib' 'liblapack=3.8.0=*netlib' 'liblapacke=3.8.0=*netlib' gfortran_win-64=
Collecting package metadata (current_repodata.json): ...working... done
Solving environment: ...working... failed with repodata from current_repodata.json, will retry with next repodata source.
Collecting package metadata (repodata.json): ...working... done
Solving environment: ...working... failed

PackagesNotFoundError: The following packages are not available from current channels:

  - gfortran_win-64

[h-vetinari]

Thanks for finishing this off, @isuruf!

The CI looks like the windows builds failed to upload, but the files are there.