13.x
[11.x] Add unprocessableContent and update unprocessableEntity (#51815)
[12.x] remove `@return` docblocks on constructors (#55076)
[12.x] Fix `PendingRequest@pool()` && `batch()` concurrency (#57973)
refactor: add |null in dock block (#58268)
[12.x] Add Http::batch (#56946)
Add a base exception for Http exceptions (#33581)
Isolate cloud agent requests from global HTTP client configuration (#61064)
pass the HTTP method to retry callbacks for asynchronous HTTP requests (#61106)
Pool and Batch newRequest() (#58038)
Replace manual all/any foreach loops with array_all/array_any (#60742)
[12.x] Correct truncate exceptions at (#59239)
cache falsy http client json responses (#60357)
Reject non-stream resources in HTTP fake response bodies (#61047)
[12.X] Fix `Http::preventStrayRequests` error propagation when using `Http::pool` (#55689)