Log Message:
py-responses: updated to 0.13.1

0.13.1
* Fixed packages not containing type stubs.

0.13.0
* `responses.upsert()` was added. This method will `add()` a response if one
  has not already been registered for a URL, or `replace()` an existing
  response.
* `responses.registered()` was added. The method allows you to get a list of
  the currently registered responses. This formalizes the previously private
  `responses.mock._matches` method.
* A more useful `__repr__` has been added to `Response`.
* Error messages have been improved.