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- (Re)add ``-w,--write-only`` option to write buildout.cfg and exit
- Add ``-f,--force`` option to overwrite existing buildout.cfg
- Remove ``--no-buildout`` option
- Support multiple extends e.g. ``-e "http://extend-one http://extend-two"``
- Add commented additional default extends https://raw.github.com/plock/pins/master/dev
- Change add-on installation syntax from ``-a, --add-on`` to ``-i, --install-addon``
- "Installing add-on" output now prints PyPI URL of add-on
- Rename ``-e, --extra`` to ``-e, --extends``