Release version number shown on GitHub is not latest release, leading to confusion

`restview` is excellent! One thing that confused me, however, is that on GitHub the latest version on the [releases page](https://github.com/mgedmin/restview/releases) is 2.0.4, which is actually not the latest version that one gets from `pip install restview`.

Given that PyPI seems to be the location where releases are actually put, perhaps it would be best to simply remove the releases from GitHub. Alternatively, it might help to have a note somewhere to explain that people should ignore what they see on the releases page because it doesn't reflect the real latest release.

Start by comparing the GitHub releases page with the version available from PyPI, as described in the issue. Determine whether the project should remove the misleading GitHub releases or add a clear explanation, then verify that the chosen release information no longer confuses users.

Written by the indexing model from the issue text.