* When using `assert_all_requests_are_fired=True`, assertions
about unfired requests are now raised even when an exception
occurs in the context manager or decorated function.
Previously, these assertions were suppressed when exceptions
occurred.
* Consider the `Retry-After` header when handling retries
OBS-URL: https://build.opensuse.org/package/show/devel:languages:python/python-responses?expand=0&rev=77
