Release Notes: One bug was fixed for Rainbows! and only Rainbows! This release fixes HTTP pipelining for requests with bodies for users of synchronous Rainbows! concurrency models. Since Unicorn itself does not support keepalive nor pipelining, Unicorn-only users need not upgrade.
Release Notes: This release fixes a race condition during worker startup.
Release Notes: This release fixes races/error handling in the worker SIGQUIT handler.
Release Notes: This release contains fairly major internal workings of master-to-worker notifications. There are also several bugfixes and documentation updates, but no incompatibilities.
Release Notes: This release supports SO_REUSEPORT on new listeners, and adds minor tweaks and fixes.
Release Notes: This release fixes the --no-default-middleware option. There are also minor documentation updates and internal cleanups.