To setup development environment in CWD:

$ # Install whatever packages you don't already have
$ <package manager> install git python3 python3-virtualenv
$ git clone https://github.com/SaltyHash/mcdl.git
$ virtualenv --python=python3 mcdl

To start development:

$ cd .../mcdl/
$ git pull                           # Pull the latest code
$ . bin/activate                     # Activate the virtualenv
$ pip install -r requirements.txt    # Install dependencies, if necessary
$ python mcdl.py ...                 # Test changes made to mcdl.py

To upload distribution to PyPI:

$ cd .../mcdl/
$ . bin/activate                     # Activate virtualenv, if necessary
$ python setup.py sdist              # Create source distribution
$ python setup.py bdist_wheel        # Create build distribution wheel
$ twine upload dist/mcdl-X.Y.Z*      # Upload to PyPI