Collective.exportimport

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- Nothing changed yet.

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- Fix migrating blocks to make Volto sites portable and support plone.distribution.
[pbauer, tlotze]

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- Fix ``AtributeError: 'NamedFile' object has no attribute '_blob'`` when using setting
"Include blobs as blob paths" and exporting objects with
plone.namedfile.file.NamedFile properties (so not blobs).
[valipod]

- Add more Python 2 compatible version specifications and update the README.
[thet]

- Fix ``KeyError: time`` when importing content with a workflow that does not have the ``time`` variable.
[maurits]

- Allow to use fix_html_in_content_fields without applying the default html_fixer.
[pbauer]

- Try to restore broken blobs when exporting content.
[thet]

- When exporting into separate JSON files write also the error in a separate errors.json file.
This fixes an error at the end of the export and no errors being written.
[thet]

- Add support for ATTopic export_content
[avoinea]

- Add principals to groups that already exist during import (228)
[pbauer]

- In export_members ignore transitive membership of groups (240)
[pbauer]

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- Don't re-use `mapping` variable when migrating portlet data.
[witsch]

- Fix editing revision author - refs 216
[avoinea]

- Better support for portal import which avoids parsing JSON twice.
[gotcha]

- Migrate portlets on site root.
[ThibautBorn]

- Support export & import to have one separate json-file per content item.
[pbauer]

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- Allow passing custom filenames to exports
[pbauer]

- Support export and import of Plone Site root (using update strategy).
[pbauer]

- Fix blob export when Connection uses TmpStore
[gotcha, pbauer]

- Fix portlet richtext field import
[mpeeters]

- Add portlet location on exported data
[mpeeters]

- Migrate root of portlets that used a path in plone4 to using a uid (navigation, search, events, collection).
[pbauer]

- Make export of discussions and portlets contextual
[mpeeters]

- Fix critical bug when importing groups: Do not import groups that a groups belongs to as members of the new group.
This could have caused groups to have more privileges than they should.
[pbauer]

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- Import: run set_uuid method before we call custom hooks, so the hooks have access to
the item UUID. Fix 185.
- Document COLLECTIVE_EXPORTIMPORT_CENTRAL_DIRECTORY in README.
[fredvd]

- Add Spanish translation.
[macagua]

- Add i18n support.
[macagua]

- Fix html: improve mapping from scale to picture variant. [maurits]

- Allow overriding the fallback variant in img_variant_fixer.
Use 'medium' by default.
[maurits]

- Let fix_html view work on the current context. [maurits]

- Fix the way we get a blob path. (180)
[ale-rt]

- Create documents as containers for items without parent when documents are folderish.
[JeffersonBledsoe]

- Add support for passing any iterator as data-source to the import.
[pbauer]

- Add example for importing collective.jsonify data to documentation.
[pbauer]

- Better serialization of Topics:
- Use newer criteria added in Plone 5
- Add fallback for some criteria
- Export sort_on and sort_reversed
- Export customView as tabular_view
[pbauer]

- Always import discussions independent if discussion support is enabled or not
on a particular content object (182)
[ajung]