Add reports endpoint methods

[JohnLZeller]

This add methods for the yet to be added reports/ endpoint on the v2 API.

Unit tests included and pass.

Adds

• get_reports()
• get_report()
• create_report()

Let me know if there is anything you'd like me to fix @maksim-s :)

[sds]

Rebased and merged in d6765b96122c06cc7d16e7d127f45328ad00a841. Failure can be ignored as we've dropped support for Python 3.2. Thanks!

[JohnLZeller]

Thanks @sds! :D