Sort changes entries into a changelog for 0.4.2.2-alpha

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+Changes in version 0.4.2.2-alpha - 2019-10-0?
+  This release fixes several bugs from the previous alpha release.
+
+  o Major bugfixes (embedded Tor):
+    - Avoid a possible crash when restarting Tor in embedded mode and
+      enabling a different set of publish/subscribe messages. Fixes bug
+      31898; bugfix on 0.4.1.1-alpha.
+
+  o Major bugfixes (torrc):
+    - Stop ignoring torrc options after an %include directive, when the
+      included directory ends with a file that does not contain any config
+      options. (But does contain comments or whitespace.)
+      Fixes bug 31408; bugfix on 0.3.1.1-alpha.
+
+  o Minor features (authority):
+    - Directory authorities now reject relays running all currently
+      deprecated release series.  The currently supported release series
+      are: 0.2.9, 0.3.5, 0.4.0, 0.4.1, and 0.4.2.  Closes ticket 31549.
+
+  o Minor features (auto-formatting scripts):
+    - When annotating C macros, never generate a line that our check-spaces
+      script would reject. Closes ticket 31759.
+    - When annotating C macros, try to remove cases of double-negation.
+      Closes ticket 31779.
+
+  o Minor features (continuous integration):
+    - When building on Appveyor, pass the "-k" flag to make, so that
+      we are informed of all compilation failures, not just the first
+      one or two. Closes part of ticket 31372.
+    - When building on Travis, pass the "-k" flag to make, so that
+      we are informed of all compilation failures, not just the first
+      one or two. Closes part of ticket 31372.
+
+  o Minor features (geoip):
+    - Update geoip and geoip6 to the October 1 2019 Maxmind GeoLite2
+      Country database. Closes ticket 31931.
+
+  o Minor features (maintenance scripts):
+    - Add a coccinelle script to detect bugs caused by incrementing or
+      decrementing a variable inside a call to log_debug().  Since
+      log_debug() is a macro whose arguments are conditionally evaluated, it
+      is usually an error to do this. One such bug was 30628, in which SENDME
+      cells were miscounted by a decrement operator inside a log_debug()
+      call.  Closes ticket 30743.
+
+  o Minor features (onion services v3):
+    - Assist users who try to setup v2 client authorization in v3 onion
+      services by pointing them to the right documentation. Closes ticket
+      28966.
+
+  o Minor bugfixes (Appveyor CI):
+    - Avoid spurious errors when Appveyor CI fails before the install step.
+      Fixes bug 31884; bugfix on 0.3.4.2-alpha.
+
+  o Minor bugfixes (best practices tracker):
+    - When listing overbroad exceptions, do not also list problems,
+      and do not list insufficiently broad exceptions. Fixes bug 31338;
+      bugfix on 0.4.2.1-alpha.
+
+  o Minor bugfixes (controller protocol):
+    - Fix the MAPADDRESS controller command to accept one or more
+      arguments. Previously, it required two or more arguments, and ignored
+      the first. Fixes bug 31772; bugfix on 0.4.1.1-alpha.
+
+  o Minor bugfixes (logging):
+    - Add a missing check for HAVE_PTHREAD_H, because the backtrace code uses
+      mutexes. Fixes bug 31614; bugfix on 0.2.5.2-alpha.
+    - Disable backtrace signal handlers when shutting down tor.
+      Fixes bug 31614; bugfix on 0.2.5.2-alpha.
+    - Rate-limit our the logging message about the obsolete .exit notation.
+      Previously, there was no limit on this warning, which could potentially
+      be triggered many times by a hostile website. Fixes bug 31466;
+      bugfix on 0.2.2.1-alpha.
+    - When initialising log domain masks, only set known log domains.
+      Fixes bug 31854; bugfix on 0.2.1.1-alpha.
+
+  o Minor bugfixes (logging, protocol violations):
+    - Do not log a nonfatal assertion failure when receiving a VERSIONS
+      cell on a connection using the obsolete v1 link protocol. Log a
+      protocol_warn instead. Fixes bug 31107; bugfix on 0.2.4.4-alpha.
+
+  o Minor bugfixes (modules):
+    - Explain what the optional Directory Authority module is, and what
+      happens when it is disabled. Fixes bug 31825; bugfix on 0.3.4.1-alpha.
+
+  o Minor bugfixes (multithreading):
+    - Avoid some undefined behaviour when freeing mutexes.
+      Fixes bug 31736; bugfix on 0.0.7.
+
+  o Minor bugfixes (relay):
+    - Avoid crashing when starting with a corrupt keys directory where
+      the old ntor key and the new ntor key are identical. Fixes bug 30916;
+      bugfix on 0.2.4.8-alpha.
+
+  o Minor bugfixes (tests, SunOS):
+    - Avoid a map_anon_nofork test failure due to a signed/unsigned integer
+      comparison. Fixes bug 31897; bugfix on 0.4.1.1-alpha.
+
+  o Code simplification and refactoring (onion services):
+    - Interface for function `decrypt_desc_layer` cleaned up. Closes ticket 31589.
+
+  o Code simplification and refactoring:
+    - Refactor connection_control_process_inbuf() to reduce the size of a
+      practracker exception. Closes ticket 31840.
+    - Refactor the microdescs_parse_from_string() function into smaller
+      pieces, for better comprehensibility.  Closes ticket 31675.
+    - Use SEVERITY_MASK_IDX() to find the LOG_* mask indexes in the unit
+      tests and fuzzers, rather than using hard-coded values.
+      Closes ticket 31334.
+
+  o Documentation:
+    - Document the signal-safe logging behaviour in the tor man page. Also
+      add some comments to the relevant functions. Closes ticket 31839.
+    - Explain why we can't destroy the backtrace buffer mutex. Explain why
+      we don't need to destroy the log mutex.
+      Closes ticket 31736.
+    - The Tor source code repository now includes a (somewhat dated)
+      description of Tor's modular architecture, in doc/HACKING/design.
+      This is based on the old "tor-guts.git" repository, which we are
+      adopting and superseding.  Closes ticket 31849.
+
+
 Changes in version 0.4.1.6 - 2019-09-19
   This release backports several bugfixes to improve stability and
   correctness.  Anyone experiencing build problems or crashes with 0.4.1.5,