Have version in single place of update-able with single command #132
Description
The pyproject.toml and docs/confi.py both define the version of the package. To make a new release the version has to be updated in both places. It would be nice to have a single place or a single command like bump2version
I would be also be nice to have run-bmi-server --version and from grpcbmi import __version__.
Side-quest of #130.