19.9.0

• fix: address a regression that prevented syslog support from working
  (#1668, #1773)
• fix: correctly set REMOTE_ADDR on versions of Python 3 affected by
  Python Issue 30205 <https://bugs.python.org/issue30205>_
  (#1755, #1796)
• fix: show zero response length correctly in access log (#1787)
• fix: prevent raising :exc:AttributeError when --reload is not passed
  in case of a :exc:SyntaxError raised from the WSGI application.
  (#1805, #1806)
• ❗️The internal module gunicorn.workers.async was renamed to
  gunicorn.workers.base_async since async is now a reserved word
  in Python 3.7.
  (#1527)

19.8.1

• fix: secure scheme headers when bound to a unix socket (#1766, #1767)

19.8.0

• Eventlet 0.21.0 support (#1584)
• Tornado 5 support (#1728, #1752)
• support watching additional files with --reload-extra-file
  (#1527)
• support configuring logging with a dictionary with --logging-config-dict
  (#1087, #1110, #1602)
• add support for the --config flag in the GUNICORN_CMD_ARGS environment
  variable (#1576, #1581)
• disable SO_REUSEPORT by default and add the --reuse-port setting
  (#1553, #1603, #1669)
• fix: installing inotify on MacOS no longer breaks the reloader
  (#1540, #1541)
• fix: do not throw TypeError when SO_REUSEPORT is not available
  (#1501, #1491)
• fix: properly decode HTTP paths containing certain non-ASCII characters
  (#1577, #1578)
• fix: remove whitespace when logging header values under gevent (#1607)
• fix: close unlinked temporary files (#1327, #1428)
• fix: parse --umask=0 correctly (#1622, #1632)
• fix: allow loading applications using relative file paths
  (#1349, #1481)
• fix: force blocking mode on the gevent sockets (#880, #1616)
• fix: preserve leading / in request path (#1512, #1511)
• fix: forbid contradictory secure scheme headers
• fix: handle malformed basic authentication headers in access log
  (#1683, #1684)
• fix: defer handling of USR1 signal to a new greenlet under gevent
  (#1645, #1651)
• fix: the threaded worker would sometimes close the wrong keep-alive
  connection under Python 2 (#1698, #1699)
• fix: re-open log files on USR1 signal using handler._open to
  support subclasses of FileHandler (#1739, #1742)
• deprecation: the gaiohttp worker is deprecated, see the
  worker-class documentation for more information
  (#1338, #1418, #1569)

19.7.1

== 19.7.1 ==

• fix: continue if SO_REUSEPORT seems to be available but fails (#1480)
• fix: support non-decimal values for the umask command line option (#1325)

19.7.0

== 19.7.0 ==

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

Breaking Change

• Python 2.6.0 is the last supported version

19.6.0

== 19.6.0 ==

Core

• improvement of the binary upgrade behaviour using USR2: remove file lockin (#1270)
• add the --capture-output setting to capture stdout/stderr tot the log file (#1271)
• Allow disabling sendfile() via the SENDFILE` environment variable (#1252)
• fix reload under pycharm (#1129)

Workers

• fix: make sure to remove the signal from the worker pipe (#1269)
• fix: gthread worker, handle removed socket in the select loop (#1258)

19.5.0

== 19.5.0 ==

=== Core ===

• fix: Ensure response to HEAD request won't have message body
• fix: lock domain socket and remove on last arbiter exit (#1220)
• improvement: use EnvironmentError instead of socket.error (#939)
• add: new $FORWARDDED_ALLOW_IPS environment variable (#1205)
• fix: infinite recursion when destroying sockets (#1219)
• fix: close sockets on shutdown (#922)
• fix: clean up sys.exc_info calls to drop circular refs (#1228)
• fix: do post_worker_init after load_wsgi (#1248)

=== Workers ===

• fix access logging in gaiohttp worker (#1193)
• eventlet: handle QUIT in a new coroutine (#1217)
• gevent: remove obsolete exception clauses in run (#1218)
• tornado: fix extra "Server" response header (#1246)
• fix: unblock the wait loop under python 3.5 in sync worker (#1256)

=== Logging ===

• fix: log message for listener reloading (#1181)
• Let logging module handle traceback printing (#1201)
• improvement: Allow configuring logger_class with statsd_host (#1188)
• fix: traceback formatting (#1235)
• fix: print error logs on stderr and access logs on stdout (#1184)

=== Documentation ===

• Simplify installation instructions in gunicorn.org (#1072)
• Fix URL and default worker type in example_config (#1209)
• update django doc url to 1.8 lts (#1213)
• fix: miscellaneous wording corrections (#1216)
• Add PSF License Agreement of selectors.py to NOTICE (:issue: #1226)
• document LOGGING overriding (#1051)
• put a note that error logs are only errors from Gunicorn (#1124)
• add a note about the requirements of the threads workers under python 2.x (#1200)
• add access_log_format to config example (#1251)

=== Tests ===

• Use more pytest.raises() in test_http.py

19.4.5

== 19.4.5 ==

• fix: NameError fileno in gunicorn.http.wsgi (#1178)

19.4.4

== 19.4.4 ==

• fix: check if a fileobject can be used with sendfile(2) (#1174)
• doc: be more descriptive in errorlog option (#1173)

19.4.3

== 19.4.3 ==

• fix: don't check if a file is writable using os.stat with SELINUX (#1171)