Plone.formwidget.namedfile

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Bug fixes:


- set widget value to z3c.form.interfaces.NOT_CHANGED when the user selects 'Keep Existing File' in the widget, so z3c.form understands the field has not changed [flipmcf] (41)

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Bug fixes:


- Only use the new feature for keeping an already uploaded image when it is a POST request.
Fixes auto csrf error in `site-controlpanel <https://github.com/plone/Products.CMFPlone/issues/2628>`_
and `personal-information <https://github.com/plone/Products.CMFPlone/issues/2709>`_ page.
[maurits] (2628)

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Bug fixes:


- Close files, so no resource warnings are shown. [gforcada] (36)
- Initialize towncrier. [gforcada] (2548)

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Bug fixes:

- Python 2 / 3 compatibility
[ale-rt, pbauer, davisagli]

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Bug fixes:

- Prepare for Python 2 / 3 compatibility
[ale-rt, pbauer]

- On form validation errors after submitting, keep the already uploaded image.
[thet]

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Bug fixes:

- remove mention of "retina" (https://github.com/plone/Products.CMFPlone/issues/2123)
[tkimnguyen]