Yafowil.widget.richtext

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- No changes yet.

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- Add dedicated ``plone4`` and ``plone5`` widgets JS. TinyMCE handling is too
different to be done generic.
[rnix]

- Python 3 compatibility.
[rnix]

- Convert doctests to unittests.
[rnix]

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- Use ``yafowil.utils.entry_point`` decorator.
[rnix, 2016-06-28]

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- Package cleanup.
[rnix]

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- check for plone context in JS in order to use different tinymce
initialization code.
[rnix, 2012-10-25]

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- Adopt resource providing
[rnix, 2012-06-12]

- Provide example widget
[rnix, 2012-06-12]