Removing outdated references to Elasticsearch

[sdelliot]

This PR updates the documentation to fix an outdated comment that Elasticsearch is installed with FIREWHEEL. Additionally, we fix a bug introduced by #14 which neglected to update the version for the Sphinx documentation.

[mitchnegus]

This looks good to me. I think I missed the fact that in #14 we actually got rid of the firewheel.__version__ variable. Do you think we might be able to restore that, but using the Importlib version accessor? I haven't used importlib in that way before (I've always opted for using a _version.py file) so I'm not sure what it's limitations are as far as being callable in the firewheel.__init__ module.

My thinking is just that I will often try to call <package>.__version__ on packages, especially when debugging, and so it's a nice convenience to have around. I'm happy to merge this PR as is and investigate ways to bring it back if need be. I don't want to hold this one up.

[sdelliot]

This looks good to me. I think I missed the fact that in #14 we actually got rid of the firewheel.__version__ variable. Do you think we might be able to restore that, but using the Importlib version accessor? I haven't used importlib in that way before (I've always opted for using a _version.py file) so I'm not sure what it's limitations are as far as being callable in the firewheel.__init__ module.

My thinking is just that I will often try to call <package>.__version__ on packages, especially when debugging, and so it's a nice convenience to have around. I'm happy to merge this PR as is and investigate ways to bring it back if need be. I don't want to hold this one up.

It looks like based on the latest packaging guide: https://packaging.python.org/en/latest/discussions/versioning/#accessing-version-information-at-runtime it seems like it is not required, but many projects choose to do so. Given that there is minimal overhead to maintain. I'll add that back but use the importlib.metadata method to generate the version number.

[CLAassistant]

All committers have signed the CLA.

[mitchnegus]

This looks good to me! Sorry it took so long, I hadn't checked my pending reviews lately.