Handroll

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* Add support for Python 3.6.
* Include an ``OpenGraphExtension``
to add metadata to blog posts.
* Include a ``TwitterExtension``
to add metadata to blog posts.
* Remove support for Python 2.7.

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* Processs Jinja 2 templates for any file with a ``.j2`` extension
with the built-in ``Jinja2Composer``.
* Add ``SitemapExtension`` to generate sitemaps.
* Move version information into the ``handroll`` package
so it is available at runtime.
* Perform continuous integration testing on OS X.
* Include ``posts`` in the blog feed list
to permit more complex list rendering.
* Remove support for Python 2.6

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* Replaced all flag based commands with sub-commands.
This change means all interaction now happens through
``handroll build``, ``handroll watch``, and ``handroll scaffold``.

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* Create a site quickly with the new scaffold command
(e.g., ``handroll -s default new_site``)
* Use the SmartyPants library to generate better quotation
marks for Markdown.
* Composers can be forced to compose with the ``--force`` flag.
* Translated to Arabic.
* Relax the frontmatter requirement and don't force the
inclusion of the YAML directive (e.g., ``%YAML 1.1``).
* Support Python 3.5.
* An output directory can be a relative path.

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* Added an extension interface for plugin authors to integrate
with various events.
* Added a blog extension to automatically generate an Atom XML
feed and blog listing page.
* Translated to Greek.

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* Translated to Dutch.