message: feat(techdocs-core): add python formatter
diff: +# The "base" version of the Mkdocs project.
  +# Note: if you update this, also update `install_requires` in setup.py
  +# https://github.com/mkdocs/mkdocs
  mkdocs==1.1.2
  +
  +# The linter using for Python
  +# Note: This requires Python 3.6+ to run, but can format Python 2 code too.
  +# https://github.com/psf/black
  +black==19.10b0
  