Support/wagtail 3

[nickmoreton]

This changes the package so it is compatible with Wagtail v3.0

Wagtail 3 upgrade/release notes: https://docs.wagtail.org/en/stable/releases/3.0.html

Additions

Add new module import paths, including for Wagtail versions earlier than 3.0

Removals

Remove compatibility with Wagtail versions earlier than 2.15

Changes

Alter setup.py and tox to accommodate version changes. I have also copied these from the earlier work on wagtail-sharing to better match your current preferred setup here.

Testing

No changes

Screenshots

None

Notes

None

Todos

None

Checklist

• PR has an informative and human-readable title
• Changes are limited to a single goal (no scope creep)
• Code can be automatically merged (no conflicts)
• Code follows the standards laid out in the development playbook
• Passes all existing automated tests
• Any change in functionality is tested
• New functions are documented (with a description, list of inputs, and expected output)
• Placeholder code is flagged / future todos are captured in comments
• Visually tested in supported browsers and devices (see checklist below 👇)
• Project documentation has been updated (including the "Unreleased" section of the CHANGELOG)
• Reviewers requested with the Reviewers tool ➡️

Testing checklist

Browsers

• Chrome
• Firefox
• Safari
• Internet Explorer 8, 9, 10, and 11
• Edge
• iOS Safari
• Chrome for Android

Accessibility

• Keyboard friendly
• Screen reader friendly

Other

• Is useable without CSS
• Is useable without JS
• Flexible from small to large screens
• No linting errors or warnings
• JavaScript tests are passing

[rgs258]

Hi @chosak, this change looks pretty good. I wonder if CFPB might be able to run a release for Wagtail 3? if you're too busy, no worries - we can certainly run the branch for now!

thanks

[chosak]

Thank you @nickmoreton, overtaken by #63.