Update responses to 0.6.0

[pyup-bot]

There's a new version of responses available.
You are currently using 0.5.1. I have updated it to 0.6.0

These links might come in handy: PyPI | Changelog | Repo

Changelog

0.6.0

---

• Allow empty list/dict as json object (settings: remove heka routing for CEF logs #100).
• Added response_callback (move name/creator/homepageURL/updateURL to attributes (bug 1006794) #151).
• Added Response interfaces (Update the crontab for ADI scripts to wait for data (bug 1014752) #155).
• Fixed unicode characters in querystring (filter addons: only extensions, no empty guid (bug 1014752) #153).
• Added support for streaming IO buffers (Commenting crontab commands related to *_from_hive (rel 1014752) #154).
• Added support for empty (unset) Content-Type (Allow developers to upload sources of an Addon version (bug 540028) #139).
• Added reason to mocked responses (allow user admin edit even if user doesn't have a default lang (bug 1029044) #132).
• yapf autoformatting now enforced on codebase.

Got merge conflicts? Close this PR and delete the branch. I'll create a new PR for you.

Happy merging! 🤖