Collective.recaptcha

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

- Removes compatibility with ``collective.captcha``.
[wesleybl]

- No longer reads settings in annotation in portal root.
[wesleybl]

- Remove attempt to use ``five.formlib`` in controlpanel form. Now only Plone 5.2 is supported.
[wesleybl]

- Add support to Python 3.6, 3.7 and 3.8.
[wesleybl]

- Drop support to Plone 4.3 and Plone 5.0.
[wesleybl]

- Add support to Plone 5.2.
[wesleybl]

- Drop support to Plone 4.2
[idgserpro]

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- Keep record values when reapplying profile (fixes `36 <https://github.com/collective/collective.recaptcha/issues/36>`_).
[wesleybl]

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- Fix recaptcha loading in Plone 4 modal.
[wesleybl]

- Fixed startup on Python 3 (Plone 5.2).
The tests are not run yet on 5.2, so compatibility is not confirmed.
[maurits]

- Add translations
[rodfersou]

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- Updated bootstrap
- Updated the documentation
- Support Plone 5 without the need to pull in zope.formlib
[ale-rt]

- Add install and uninstall profile and a controlpanel configlet
[frapell]

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- Google reCAPTCHA API v.2
[mamico]

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- Fix the retrieval of config from the registry
[mpeeters]

- Minor correction in interface name, in the README
[frapell]