Removing slash from variable names

[eric-czech]

Changes for https://github.com/pystatgen/sgkit/issues/81.

This should work after https://github.com/pystatgen/sgkit/pull/83 goes through.

[hammer]

@eric-czech with https://github.com/pystatgen/sgkit/pull/83 in, is this ready?

[eric-czech]

Yep should be good to go now though it looks like we have two issues:

1. bgen_reader 4.0.5 is no longer compatible with our code (our implementation is using hidden functions that I think @horta removed in Feature request: bulk distributed access limix/bgen-reader-py#30 (comment). I added a version bound on our current dependency for 4.0.4 until we straighten that out.
2. We need to add zarr as a dependency to work with the vcf_zarr reader in sgkit now. It looks like this should have been added to setup.cfg but it wasn't, otherwise I think this build should still have worked:

• Compare https://github.com/pystatgen/sgkit/blob/master/requirements.txt to https://github.com/pystatgen/sgkit/blob/master/setup.cfg#L27

I'll file an issue for that and then remove it here later (there's no reason to make zarr a dependency here, I just did that to see what would make the build pass).

[eric-czech]

https://github.com/pystatgen/sgkit/issues/105