Collective-ruleactions-pythonscript

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- Nothing changed yet.

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- Add ``MANIFEST.in``.
[WouterVH]

- Added ``z3c.autoinclude``-entrypoint to mark this as a Plone-plugin.
This avoids the need to explicitly load the zcml-slug.
[WouterVH]

- Initial implementation.
[fschulze]

- Initial package structure.
[zopeskel]