set version and release in docs/conf.py from pydp import

[jandremarais]

Description

Alternative fix for #234 Instead of adding another file specific configuration to bumpversion config, this ties the docs version to the python-dp version by using pydp.__version__ in docs/conf.py

Affected Dependencies

NA

How has this been tested?

No explicit tests were ran but after building and serving the docs with cd docs && make html && make serve, the correct version is displayed.

Checklist

• [X] I have followed the Contribution Guidelines and Code of Conduct
• [X] I have commented my code following the OpenMined Styleguide
• [ ] I have labeled this PR with the relevant Type labels
• [ ] My changes are covered by tests