* Initial ansible-test support for collections.
* Include cloud config in delegation payload.
* Add missing types import and fix `t` shadowing.
* Fix plugin traceback when config_path not set.
* Fix encoding issues.
* Remove unused imports.
* More encoding fixes.
* Handle delegation outside exception handler.
* Inject ssh keys only if not already in place.
* More defensive approach to getting remote pwd.
* Add missing string format var.
* Correct PowerShell require regex.
* Rename `is_install` and `INSTALL_ROOT`.
* Move sanity into directory.
* Omit abstract classes from returned subclass list.
* Split sanity tests out into plugins.
* Fix abstract class handling for Python 3.
