Release Notes: Rack::Chunked and Rack::ContentLength middlewares are loaded by default for RACK_ENV=(development|deployment) users. CTL characters are now rejected from HTTP header values and Exception messages are now filtered for [:cntrl:] characters. There were minor bugfixes and future-proofing changes for Ruby 2.0.
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.