Write everything twice!
I was thinking the last release was published with textual 0.28.0,
but since I didn't update setup.cfg, it would have been with 0.27.0.
> It is not considered best practice to use install_requires to pin dependencies to specific versions, or to specify sub-dependencies (i.e. dependencies of your dependencies). This is overly-restrictive, and prevents the user from gaining the benefit of dependency upgrades.
It seems more important to install working versions than to allow other versions.