Plone.formwidget.recaptcha

------------------

New features:


- Provide a field to be used from an XML model
[frapell] (24)
- Subsite support (i.e. collective.lineage) [jensens] (28)


Bug fixes:


- Format code according to Plone standards: black, isort, zpretty. (27)
- Move CI from TravisCI to Github Actions [jensens] (29)

------------------

New features:


- Python 3 compatibility
[staeff, petschki] (19)

------------------

- Update TravisCI Setup and test with Plone 5.1 and 5.2 on Python 2.7.
Also test on Python 3.6+3.7 (allowed to fail, and fails for now).
[jensens]

- Remove obsolete action icons configuration.
[thet]

- update controlpanel text
[lucid-0]

- Remove obsolete ``recaptcha_ajax.js`` - all scripts are integrated via the ``norecaptcha`` package.
Add upgrade step for that.
[thet]

------------------

- Add a dummy widget display view which renders empty.
A widget needs a display view, otherwise form result rendering may fail.
[thet]

------------------

- Support for use the widget with plone.supermodel
[jpgimenez]

- Support for widget display settings as described in
https://developers.google.com/recaptcha/docs/display
[jensens]

------------------

- Fix: problem with MANIFEST.in and old package structure made 2.0a1 a
brown bag release. All non-python files (i.e. zcml) were missing.
[jensens]