Don't block entirely on HTTP requests
Don't block entirely on HTTP requests

While this has the potential to hit 429s in very minimal periods of
time, this will allow multiple concurrent HTTP requests, whereas
before they were forced to be sync.

eLunate/serenity,Lakelezz/serenity,acdenisSK/serenity,Roughsketch/serenity,Flat/serenity,zeyla/serenity.rs,zeyla/serenity