Formalchemy

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* Implemented WebOb-like request passing to FieldSet directly.

* Also implemented request passing to Grid

* Added support to set `.html_options` with Field.set(html={'some': 'thing'})

* Added support for set(validators=[validator1, validator2]) which adds the
specified validators.

* Fixed the set(null_as=...), was nul_as and badly wired in.

* Improved documentation for the Field.set() method

* Support zope.schema.Password

* Fix issues 9, 10, 11, 12

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* Fix issue 5, 7

* Allow to binf form to a webob like request

* Add Column wrapper to store some form options in models

* Field label translation

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* fix unicode issue with non webob based framework

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* use webob.multidict as ``data``. This will improve unicode handling in the
future (eg: py3k migration). WebOb is now a dependency.

* add to_dict() method and .bind(with_prefix=True/False) to help to work with json data

* improve ext.fsblob. files are wrote on the file system using
``shutil.copyfileobj`` from the ``cgi.FieldStorage`` field

* Add a HiddenFieldRendererFactory and allow to hide Date/Time fields via
``.hidden()`` and ``.set(hidden=True)`` (Thanks to tarek to put this idea in
my brain)

* added german translation (thanks disko for pull request)

* fix issue 1, 2 (on github)

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* fix issues 150, 151, 153, 161, 162

* Added `field.label()` and `field.label_tags()`

* Major refactoring. The `base` module no longer existe.

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* No longer use Binary type. Use LargeBinary instead.

* fix issues 145, 147