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New features:
- Add UID to relationvalue_converter summary. [ksuess] (1605)
- Add querystring_search get method. [robgietema] (1616)
Bug fixes:
- Fix a bunch of deprecation warnings in a Plone 5.2 compatible way.
Applied proper isort.
Fixed unclosed file issues in a test.
Added Python 3.11 to test matrix.
[jensens] (1606)
- No longer declare support for Python 3.6 (it was already not tested). [davisagli] (1615)
- Fixed encoding issue on Python 3 for some mail servers.
This could result in missing characters in an email body.
[maurits] (3754)