* fixes for collection playbooks
- add fqcn invocation, also handles extensions
- bring import_playbook into new normal
- avoid adding collection playbooks to adjacency
- deal with extensions or lack of em
- added tests
- fix bugs with multiple playbooks supplied
- unicode/bytes/native fixes
- fix modulenotfound for < py3.7
- tests
* Tag return value docs if they are a dict (and not str/None).
* Try to parse return docs as YAML.
* Properly dump return values in ansible-doc.
* Adjust plugin formatter.
* Add changelog fragment.
* Don't add 'default' for return values.
* Fix plugin_formatter.
* Only try to parse return docs if they are still a string.
* Add tests.
* Warn if RETURN cannot be parsed.
* Adjust tests. Also test for warning.
* if -> elif (otherwise EXAMPLE will be parsed too).
* Always parse return documentation, and fail if it is invalid YAML.
* Polishing.
* Mostly re-enable ansible-doc tests.
Listing from the local collection seems to be somewhat broken. I assume this
is why the test was disabled.
* Lint and make tests work with Python 2.
* Keep FQCNs in plugins (not modules), i.e. restore previous state.
