Cioppino.twothumbs

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- Nothing changed yet.

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- Add compatibility with Plone 6.0.
Keep compatibility with Plone 5.2, but only on Python 3.
[maurits]

- Fix mismatch between upgrade step and metadata version.
Fixes `issue 31 <https://github.com/collective/cioppino.twothumbs/issues/31>`_ for version 3.
[maurits]

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- Fix mismatch between upgrade step and metadata version.
Fixes `issue 31 <https://github.com/collective/cioppino.twothumbs/issues/31>`_.
[maurits]

- Create branch 2.x on which I revert changes made after 2.2.1.
This restores compatibility with Plone 5.2 on Python 2.7.
Also Plone 4.3, 5.0 and 5.1 should still work.
The master branch will be for Plone 5.2 and 6.0 on Python 3.
See `issue 35 <https://github.com/collective/cioppino.twothumbs/issues/35>`_.
[maurits]

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- Fix registry uninstall profile for Plone 5 [andreasma]

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- Flake8 and isort fixes [andreasma]
- Add buildout scripts for Plone 5.2 and Plone 6.0 and
add them to the Github actions test matrix (instead of
former test_plone.5.2.x buildout file [andreasma]
- Use plone.api for user actions [andreasma]
- Remove Travis configuration / buildout file [andreasma]
- Update localization files [andreasma]

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- Import IObjectEvent and ObjectEvent from zope.interface.interfaces
[andreasma]
- Change buildout scripts (buildout.cfg, base.cfg) and add new file
constraints_plone52.txt and new buildout script test_plone-5.2.x.cfg
[andreasma]
- Add lib64 to .gitignore [andreasma]
- Update requirements.txt to use constraints_plone52.txt [andreasma]
- Fix import exception in like.py and flake8 fix in testing.py [andreasma]
- Update Manifest.in [andreasma]
- Add Github actions workflow with tests [andreasma]