- update to 19.7.1:
- fix: continue if SO_REUSEPORT seems to be available but fails (:issue:`1480`)
- fix: support non-decimal values for the umask command line option (:issue:`1325`)
- The previously deprecated ``gunicorn_django`` command has been removed.
Use the :ref:`gunicorn-cmd` command-line interface instead.
- The previously deprecated ``django_settings`` setting has been removed.
Use the :ref:`raw-env` setting instead.
- The default value of :ref:`ssl-version` has been changed from
``ssl.PROTOCOL_TLSv1`` to ``ssl.PROTOCOL_SSLv23``.
- fix: initialize the group access list when initgroups is set (:issue:`1297`)
- add environment variables to gunicorn access log format (:issue:`1291`)
- add --paste-global-conf option (:issue:`1304`)
- fix: print access logs to STDOUT (:issue:`1184`)
- remove upper limit on max header size config (:issue:`1313`)
- fix: print original exception on AppImportError (:issue:`1334`)
- use SO_REUSEPORT if available (:issue:`1344`)
- `fix leak `_ of duplicate file descriptor
for bound sockets.
- add --reload-engine option, support inotify and other backends (:issue:`1368`, :issue:`1459`)
- fix: reject request with invalid HTTP versions
- add ``child_exit`` callback (:issue:`1394`)
- add support for eventlets _AlreadyHandled object (:issue:`1406`)
- format boot tracebacks properly with reloader (:issue:`1408`)
- refactor socket activation and fd inheritance for better support of SystemD (:issue:`1310`)
- fix: o fds are given by default in gunicorn (:issue:`1423`)
- add ability to pass settings to GUNICORN_CMD_ARGS environnement variable which helps in container world (:issue:`1385`)
- fix: catch access denied to pid file (:issue:`1091`)
- many additions and improvements to the documentation
- improvement of the binary upgrade behaviour using USR2: remove file locking (:issue:`1270`)