Handle new XAUTOCLAIM response introduced in redis>=4.3.4

[andreasjansson]

A breaking change in redis==4.3.4 breaks Cog.

This PR handles the new XAUTOCLAIM response format in a backwards-compatible way.

Closes #671

[bfirsh]

Looks good. Perhaps we should also pin redis in setup.py to avoid this issue in the future? It seems unlikely that redis will be installed for any other reason.

The real fix: #409

[bfirsh]

This breaks all existing versions of Cog doesn't it? I guess this is a good reason to use #605 :)

[andreasjansson]

Perhaps we should also pin redis in setup.py to avoid this issue in the future?

I decided against this since redis-py is used by a lot of other packages.

But yeah, this is another reminder that we really should vendor dependencies.

[bfirsh]

I wonder if they are going to be used in ML models though?

[andreasjansson]

I wonder if they are going to be used in ML models though?

Ray, Optuna, etc.

It's probably as likely that any of the other packages we depend on introduce breaking changes. I think we should just get this issue fixed and then move to vendor our dependencies.

[bfirsh]

100% all looks good.