Realised there was one more scenario whereby a renewal request could fail to reach the head of the queue first in the context of a scrape with high concurrency. Closed.
0.8
Altered the get method to account for the fact that cookies are stored by domain within each cookiejar.
Added the `add_cookies_manually` method.
0.7.127390712
Realised it was possible for a request to get ahead of the renewal request after a clear event is triggered. So made this impossible.