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-Changes in version 0.3.0.6 - 2017-04-2?
-  Tor 0.3.0.6 is the first stable release of the Tor 0.3.0 series.
-
-  XXXXX BLURB HERE.
-
-  Below are the changes since 0.2.9.10. For a list of only the changes
-  since 0.3.0.5-rc, see the ChangeLog file.
-
-  o Major features (directory authority, security):
-    - The default for AuthDirPinKeys is now 1: directory authorities
-      will reject relays where the RSA identity key matches a previously
-      seen value, but the Ed25519 key has changed. Closes ticket 18319.
-
-  o Major features (guard selection algorithm):
-    - Tor's guard selection algorithm has been redesigned from the
-      ground up, to better support unreliable networks and restrictive
-      sets of entry nodes, and to better resist guard-capture attacks by
-      hostile local networks. Implements proposal 271; closes
-      ticket 19877.
-
-  o Major features (next-generation hidden services):
-    - Relays can now handle v3 ESTABLISH_INTRO cells as specified by
-      prop224 aka "Next Generation Hidden Services". Service and clients
-      don't use this functionality yet. Closes ticket 19043. Based on
-      initial code by Alec Heifetz.
-    - Relays now support the HSDir version 3 protocol, so that they can
-      can store and serve v3 descriptors. This is part of the next-
-      generation onion service work detailled in proposal 224. Closes
-      ticket 17238.
-
-  o Major features (protocol, ed25519 identity keys):
-    - Clients now support including Ed25519 identity keys in the EXTEND2
-      cells they generate. By default, this is controlled by a consensus
-      parameter, currently disabled. You can turn this feature on for
-      testing by setting ExtendByEd25519ID in your configuration. This
-      might make your traffic appear different than the traffic
-      generated by other users, however. Implements part of ticket
-      15056; part of proposal 220.
-    - Relays now understand requests to extend to other relays by their
-      Ed25519 identity keys. When an Ed25519 identity key is included in
-      an EXTEND2 cell, the relay will only extend the circuit if the
-      other relay can prove ownership of that identity. Implements part
-      of ticket 15056; part of proposal 220.
-    - Relays now use Ed25519 to prove their Ed25519 identities and to
-      one another, and to clients. This algorithm is faster and more
-      secure than the RSA-based handshake we've been doing until now.
-      Implements the second big part of proposal 220; Closes
-      ticket 15055.
-
-  o Major features (security):
-    - Change the algorithm used to decide DNS TTLs on client and server
-      side, to better resist DNS-based correlation attacks like the
-      DefecTor attack of Greschbach, Pulls, Roberts, Winter, and
-      Feamster. Now relays only return one of two possible DNS TTL
-      values, and clients are willing to believe DNS TTL values up to 3
-      hours long. Closes ticket 19769.
-
-  o Major bugfixes (client, onion service, also in 0.2.9.9):
-    - Fix a client-side onion service reachability bug, where multiple
-      socks requests to an onion service (or a single slow request)
-      could cause us to mistakenly mark some of the service's
-      introduction points as failed, and we cache that failure so
-      eventually we run out and can't reach the service. Also resolves a
-      mysterious "Remote server sent bogus reason code 65021" log
-      warning. The bug was introduced in ticket 17218, where we tried to
-      remember the circuit end reason as a uint16_t, which mangled
-      negative values. Partially fixes bug 21056 and fixes bug 20307;
-      bugfix on 0.2.8.1-alpha.
-
-  o Major bugfixes (crash, directory connections):
-    - Fix a rare crash when sending a begin cell on a circuit whose
-      linked directory connection had already been closed. Fixes bug
-      21576; bugfix on 0.2.9.3-alpha. Reported by Alec Muffett.
-
-  o Major bugfixes (directory authority):
-    - During voting, when marking a relay as a probable sybil, do not
-      clear its BadExit flag: sybils can still be bad in other ways
-      too. (We still clear the other flags.) Fixes bug 21108; bugfix
-      on 0.2.0.13-alpha.
-
-  o Major bugfixes (DNS):
-    - Fix a bug that prevented exit nodes from caching DNS records for
-      more than 60 seconds. Fixes bug 19025; bugfix on 0.2.4.7-alpha.
-
-  o Major bugfixes (IPv6 Exits):
-    - Stop rejecting all IPv6 traffic on Exits whose exit policy rejects
-      any IPv6 addresses. Instead, only reject a port over IPv6 if the
-      exit policy rejects that port on more than an IPv6 /16 of
-      addresses. This bug was made worse by 17027 in 0.2.8.1-alpha,
-      which rejected a relay's own IPv6 address by default. Fixes bug
-      21357; bugfix on commit 004f3f4e53 in 0.2.4.7-alpha.
-
-  o Major bugfixes (parsing):
-    - Fix an integer underflow bug when comparing malformed Tor
-      versions. This bug could crash Tor when built with
-      --enable-expensive-hardening, or on Tor 0.2.9.1-alpha through Tor
-      0.2.9.8, which were built with -ftrapv by default. In other cases
-      it was harmless. Part of TROVE-2017-001. Fixes bug 21278; bugfix
-      on 0.0.8pre1. Found by OSS-Fuzz.
-    - When parsing a malformed content-length field from an HTTP
-      message, do not read off the end of the buffer. This bug was a
-      potential remote denial-of-service attack against Tor clients and
-      relays. A workaround was released in October 2016, to prevent this
-      bug from crashing Tor. This is a fix for the underlying issue,
-      which should no longer matter (if you applied the earlier patch).
-      Fixes bug 20894; bugfix on 0.2.0.16-alpha. Bug found by fuzzing
-      using AFL (http://lcamtuf.coredump.cx/afl/).
-
-  o Major bugfixes (scheduler):
-    - Actually compare circuit policies in ewma_cmp_cmux(). This bug
-      caused the channel scheduler to behave more or less randomly,
-      rather than preferring channels with higher-priority circuits.
-      Fixes bug 20459; bugfix on 0.2.6.2-alpha.
-
-  o Major bugfixes (security, also in 0.2.9.9):
-    - Downgrade the "-ftrapv" option from "always on" to "only on when
-      --enable-expensive-hardening is provided." This hardening option,
-      like others, can turn survivable bugs into crashes--and having it
-      on by default made a (relatively harmless) integer overflow bug
-      into a denial-of-service bug. Fixes bug 21278 (TROVE-2017-001);
-      bugfix on 0.2.9.1-alpha.
-
-  o Minor feature (client):
-    - Enable IPv6 traffic on the SocksPort by default. To disable this,
-      a user will have to specify "NoIPv6Traffic". Closes ticket 21269.
-
-  o Minor feature (fallback scripts):
-    - Add a check_existing mode to updateFallbackDirs.py, which checks
-      if fallbacks in the hard-coded list are working. Closes ticket
-      20174. Patch by haxxpop.
-
-  o Minor feature (protocol versioning):
-    - Add new protocol version for proposal 224. HSIntro now advertises
-      version "3-4" and HSDir version "1-2". Fixes ticket 20656.
-
-  o Minor features (ciphersuite selection):
-    - Allow relays to accept a wider range of ciphersuites, including
-      chacha20-poly1305 and AES-CCM. Closes the other part of 15426.
-    - Clients now advertise a list of ciphersuites closer to the ones
-      preferred by Firefox. Closes part of ticket 15426.
-
-  o Minor features (controller):
-    - Add "GETINFO sr/current" and "GETINFO sr/previous" keys, to expose
-      shared-random values to the controller. Closes ticket 19925.
-    - When HSFETCH arguments cannot be parsed, say "Invalid argument"
-      rather than "unrecognized." Closes ticket 20389; patch from
-      Ivan Markin.
-
-  o Minor features (controller, configuration):
-    - Each of the *Port options, such as SocksPort, ORPort, ControlPort,
-      and so on, now comes with a __*Port variant that will not be saved
-      to the torrc file by the controller's SAVECONF command. This
-      change allows TorBrowser to set up a single-use domain socket for
-      each time it launches Tor. Closes ticket 20956.
-    - The GETCONF command can now query options that may only be
-      meaningful in context-sensitive lists. This allows the controller
-      to query the mixed SocksPort/__SocksPort style options introduced
-      in feature 20956. Implements ticket 21300.
-
-  o Minor features (diagnostic, directory client):
-    - Warn when we find an unexpected inconsistency in directory
-      download status objects. Prevents some negative consequences of
-      bug 20593.
-
-  o Minor features (directory authorities):
-    - Directory authorities now reject descriptors that claim to be
-      malformed versions of Tor. Helps prevent exploitation of
-      bug 21278.
-    - Reject version numbers with components that exceed INT32_MAX.
-      Otherwise 32-bit and 64-bit platforms would behave inconsistently.
-      Fixes bug 21450; bugfix on 0.0.8pre1.
-
-  o Minor features (directory authority):
-    - Add a new authority-only AuthDirTestEd25519LinkKeys option (on by
-      default) to control whether authorities should try to probe relays
-      by their Ed25519 link keys. This option will go away in a few
-      releases--unless we encounter major trouble in our ed25519 link
-      protocol rollout, in which case it will serve as a safety option.
-
-  o Minor features (directory cache):
-    - Relays and bridges will now refuse to serve the consensus they
-      have if they know it is too old for a client to use. Closes
-      ticket 20511.
-
-  o Minor features (ed25519 link handshake):
-    - Advertise support for the ed25519 link handshake using the
-      subprotocol-versions mechanism, so that clients can tell which
-      relays can identity themselves by Ed25519 ID. Closes ticket 20552.
-
-  o Minor features (entry guards):
-    - Add UseEntryGuards to TEST_OPTIONS_DEFAULT_VALUES in order to not
-      break regression tests.
-    - Require UseEntryGuards when UseBridges is set, in order to make
-      sure bridges aren't bypassed. Resolves ticket 20502.
-
-  o Minor features (fallback directories):
-    - Allow 3 fallback relays per operator, which is safe now that we
-      are choosing 200 fallback relays. Closes ticket 20912.
-    - Annotate updateFallbackDirs.py with the bandwidth and consensus
-      weight for each candidate fallback. Closes ticket 20878.
-    - Display the relay fingerprint when downloading consensuses from
-      fallbacks. Closes ticket 20908.
-    - Exclude relays affected by bug 20499 from the fallback list.
-      Exclude relays from the fallback list if they are running versions
-      known to be affected by bug 20499, or if in our tests they deliver
-      a stale consensus (i.e. one that expired more than 24 hours ago).
-      Closes ticket 20539.
-    - Make it easier to change the output sort order of fallbacks.
-      Closes ticket 20822.
-    - Reduce the minimum fallback bandwidth to 1 MByte/s. Part of
-      ticket 18828.
-    - Require fallback directories to have the same address and port for
-      7 days (now that we have enough relays with this stability).
-      Relays whose OnionOO stability timer is reset on restart by bug
-      18050 should upgrade to Tor 0.2.8.7 or later, which has a fix for
-      this issue. Closes ticket 20880; maintains short-term fix
-      in 0.2.8.2-alpha.
-    - Require fallbacks to have flags for 90% of the time (weighted
-      decaying average), rather than 95%. This allows at least 73% of
-      clients to bootstrap in the first 5 seconds without contacting an
-      authority. Part of ticket 18828.
-    - Select 200 fallback directories for each release. Closes
-      ticket 20881.
-
-  o Minor features (fingerprinting resistence, authentication):
-    - Extend the length of RSA keys used for TLS link authentication to
-      2048 bits. (These weren't used for forward secrecy; for forward
-      secrecy, we used P256.) Closes ticket 13752.
-
-  o Minor features (geoip):
-    - Update geoip and geoip6 to the April 4 2017 Maxmind GeoLite2
-      Country database.
-
-  o Minor features (geoip, also in 0.2.9.9):
-    - Update geoip and geoip6 to the January 4 2017 Maxmind GeoLite2
-      Country database.
-
-  o Minor features (infrastructure):
-    - Implement smartlist_add_strdup() function. Replaces the use of
-      smartlist_add(sl, tor_strdup(str)). Closes ticket 20048.
-
-  o Minor features (linting):
-    - Enhance the changes file linter to warn on Tor versions that are
-      prefixed with "tor-". Closes ticket 21096.
-
-  o Minor features (logging):
-    - In several places, describe unset ed25519 keys as "<unset>",
-      rather than the scary "AAAAAAAA...AAA". Closes ticket 21037.
-
-  o Minor features (portability, compilation):
-    - Autoconf now checks to determine if OpenSSL structures are opaque,
-      instead of explicitly checking for OpenSSL version numbers. Part
-      of ticket 21359.
-    - Support building with recent LibreSSL code that uses opaque
-      structures. Closes ticket 21359.
-
-  o Minor features (relay):
-    - We now allow separation of exit and relay traffic to different
-      source IP addresses, using the OutboundBindAddressExit and
-      OutboundBindAddressOR options respectively. Closes ticket 17975.
-      Written by Michael Sonntag.
-
-  o Minor features (reliability, crash):
-    - Try better to detect problems in buffers where they might grow (or
-      think they have grown) over 2 GB in size. Diagnostic for
-      bug 21369.
-
-  o Minor features (testing):
-    - During 'make test-network-all', if tor logs any warnings, ask
-      chutney to output them. Requires a recent version of chutney with
-      the 21572 patch. Implements 21570.
-
-  o Minor bugfix (control protocol):
-    - The reply to a "GETINFO config/names" request via the control
-      protocol now spells the type "Dependent" correctly. This is a
-      breaking change in the control protocol. (The field seems to be
-      ignored by the most common known controllers.) Fixes bug 18146;
-      bugfix on 0.1.1.4-alpha.
-    - The GETINFO extra-info/digest/<digest> command was broken because
-      of a wrong base16 decode return value check, introduced when
-      refactoring that API. Fixes bug 22034; bugfix on 0.2.9.1-alpha.
-
-  o Minor bugfix (logging):
-    - Don't recommend the use of Tor2web in non-anonymous mode.
-      Recommending Tor2web is a bad idea because the client loses all
-      anonymity. Tor2web should only be used in specific cases by users
-      who *know* and understand the issues. Fixes bug 21294; bugfix
-      on 0.2.9.3-alpha.
-
-  o Minor bugfixes (bug resilience):
-    - Fix an unreachable size_t overflow in base64_decode(). Fixes bug
-      19222; bugfix on 0.2.0.9-alpha. Found by Guido Vranken; fixed by
-      Hans Jerry Illikainen.
-
-  o Minor bugfixes (build):
-    - Replace obsolete Autoconf macros with their modern equivalent and
-      prevent similar issues in the future. Fixes bug 20990; bugfix
-      on 0.1.0.1-rc.
-
-  o Minor bugfixes (certificate expiration time):
-    - Avoid using link certificates that don't become valid till some
-      time in the future. Fixes bug 21420; bugfix on 0.2.4.11-alpha
-
-  o Minor bugfixes (client):
-    - Always recover from failures in extend_info_from_node(), in an
-      attempt to prevent any recurrence of bug 21242. Fixes bug 21372;
-      bugfix on 0.2.3.1-alpha.
-    - When clients that use bridges start up with a cached consensus on
-      disk, they were ignoring it and downloading a new one. Now they
-      use the cached one. Fixes bug 20269; bugfix on 0.2.3.12-alpha.
-
-  o Minor bugfixes (code correctness):
-    - Repair a couple of (unreachable or harmless) cases of the risky
-      comparison-by-subtraction pattern that caused bug 21278.
-
-  o Minor bugfixes (config):
-    - Don't assert on startup when trying to get the options list and
-      LearnCircuitBuildTimeout is set to 0: we are currently parsing the
-      options so of course they aren't ready yet. Fixes bug 21062;
-      bugfix on 0.2.9.3-alpha.
-
-  o Minor bugfixes (configuration):
-    - Accept non-space whitespace characters after the severity level in
-      the `Log` option. Fixes bug 19965; bugfix on 0.2.1.1-alpha.
-    - Support "TByte" and "TBytes" units in options given in bytes.
-      "TB", "terabyte(s)", "TBit(s)" and "terabit(s)" were already
-      supported. Fixes bug 20622; bugfix on 0.2.0.14-alpha.
-
-  o Minor bugfixes (configure, autoconf):
-    - Rename the configure option --enable-expensive-hardening to
-      --enable-fragile-hardening. Expensive hardening makes the tor
-      daemon abort when some kinds of issues are detected. Thus, it
-      makes tor more at risk of remote crashes but safer against RCE or
-      heartbleed bug category. We now try to explain this issue in a
-      message from the configure script. Fixes bug 21290; bugfix
-      on 0.2.5.4-alpha.
-
-  o Minor bugfixes (consensus weight):
-    - Add new consensus method that initializes bw weights to 1 instead
-      of 0. This prevents a zero weight from making it all the way to
-      the end (happens in small testing networks) and causing an error.
-      Fixes bug 14881; bugfix on 0.2.2.17-alpha.
-
-  o Minor bugfixes (crash prevention):
-    - Fix an (currently untriggerable, but potentially dangerous) crash
-      bug when base32-encoding inputs whose sizes are not a multiple of
-      5. Fixes bug 21894; bugfix on 0.2.9.1-alpha.
-
-  o Minor bugfixes (dead code):
-    - Remove a redundant check for PidFile changes at runtime in
-      options_transition_allowed(): this check is already performed
-      regardless of whether the sandbox is active. Fixes bug 21123;
-      bugfix on 0.2.5.4-alpha.
-
-  o Minor bugfixes (descriptors):
-    - Correctly recognise downloaded full descriptors as valid, even
-      when using microdescriptors as circuits. This affects clients with
-      FetchUselessDescriptors set, and may affect directory authorities.
-      Fixes bug 20839; bugfix on 0.2.3.2-alpha.
-
-  o Minor bugfixes (directory mirrors):
-    - Allow relays to use directory mirrors without a DirPort: these
-      relays need to be contacted over their ORPorts using a begindir
-      connection. Fixes one case of bug 20711; bugfix on 0.2.8.2-alpha.
-    - Clarify the message logged when a remote relay is unexpectedly
-      missing an ORPort or DirPort: users were confusing this with a
-      local port. Fixes another case of bug 20711; bugfix
-      on 0.2.8.2-alpha.
-
-  o Minor bugfixes (directory system):
-    - Bridges and relays now use microdescriptors (like clients do)
-      rather than old-style router descriptors. Now bridges will blend
-      in with clients in terms of the circuits they build. Fixes bug
-      6769; bugfix on 0.2.3.2-alpha.
-    - Download all consensus flavors, descriptors, and authority
-      certificates when FetchUselessDescriptors is set, regardless of
-      whether tor is a directory cache or not. Fixes bug 20667; bugfix
-      on all recent tor versions.
-
-  o Minor bugfixes (documentation):
-    - Update the tor manual page to document every option that can not
-      be changed while tor is running. Fixes bug 21122.
-
-  o Minor bugfixes (ed25519 certificates):
-    - Correctly interpret ed25519 certificates that would expire some
-      time after 19 Jan 2038. Fixes bug 20027; bugfix on 0.2.7.2-alpha.
-
-  o Minor bugfixes (fallback directories):
-    - Avoid checking fallback candidates' DirPorts if they are down in
-      OnionOO. When a relay operator has multiple relays, this
-      prioritizes relays that are up over relays that are down. Fixes
-      bug 20926; bugfix on 0.2.8.3-alpha.
-    - Stop failing when OUTPUT_COMMENTS is True in updateFallbackDirs.py.
-      Fixes bug 20877; bugfix on 0.2.8.3-alpha.
-    - Stop failing when a relay has no uptime data in
-      updateFallbackDirs.py. Fixes bug 20945; bugfix on 0.2.8.1-alpha.
-
-  o Minor bugfixes (hidden service):
-    - Clean up the code for expiring intro points with no associated
-      circuits. It was causing, rarely, a service with some expiring
-      introduction points to not open enough additional introduction
-      points. Fixes part of bug 21302; bugfix on 0.2.7.2-alpha.
-    - Resolve two possible underflows which could lead to creating and
-      closing a lot of introduction point circuits in a non-stop loop.
-      Fixes bug 21302; bugfix on 0.2.7.2-alpha.
-    - Stop setting the torrc option HiddenServiceStatistics to "0" just
-      because we're not a bridge or relay. Instead, we preserve whatever
-      value the user set (or didn't set). Fixes bug 21150; bugfix
-      on 0.2.6.2-alpha.
-
-  o Minor bugfixes (hidden services):
-    - Make hidden services check for failed intro point connections,
-      even when they have exceeded their intro point creation limit.
-      Fixes bug 21596; bugfix on 0.2.7.2-alpha. Reported by Alec Muffett.
-    - Make hidden services with 8 to 10 introduction points check for
-      failed circuits immediately after startup. Previously, they would
-      wait for 5 minutes before performing their first checks. Fixes bug
-      21594; bugfix on 0.2.3.9-alpha. Reported by Alec Muffett.
-    - Stop ignoring misconfigured hidden services. Instead, refuse to
-      start tor until the misconfigurations have been corrected. Fixes
-      bug 20559; bugfix on multiple commits in 0.2.7.1-alpha
-      and earlier.
-
-  o Minor bugfixes (IPv6):
-    - Make IPv6-using clients try harder to find an IPv6 directory
-      server. Fixes bug 20999; bugfix on 0.2.8.2-alpha.
-    - When IPv6 addresses have not been downloaded yet (microdesc
-      consensus documents don't list relay IPv6 addresses), use hard-
-      coded addresses for authorities, fallbacks, and configured
-      bridges. Now IPv6-only clients can use microdescriptors. Fixes bug
-      20996; bugfix on b167e82 from 19608 in 0.2.8.5-alpha.
-
-  o Minor bugfixes (memory leak at exit):
-    - Fix a small harmless memory leak at exit of the previously unused
-      RSA->Ed identity cross-certificate. Fixes bug 17779; bugfix
-      on 0.2.7.2-alpha.
-
-  o Minor bugfixes (onion services):
-    - Allow the number of introduction points to be as low as 0, rather
-      than as low as 3. Fixes bug 21033; bugfix on 0.2.7.2-alpha.
-
-  o Minor bugfixes (portability):
-    - Use "OpenBSD" compiler macro instead of "OPENBSD" or "__OpenBSD__".
-      It is supported by OpenBSD itself, and also by most OpenBSD
-      variants (such as Bitrig). Fixes bug 20980; bugfix
-      on 0.1.2.1-alpha.
-
-  o Minor bugfixes (portability, also in 0.2.9.9):
-    - Avoid crashing when Tor is built using headers that contain
-      CLOCK_MONOTONIC_COARSE, but then tries to run on an older kernel
-      without CLOCK_MONOTONIC_COARSE. Fixes bug 21035; bugfix
-      on 0.2.9.1-alpha.
-    - Fix Libevent detection on platforms without Libevent 1 headers
-      installed. Fixes bug 21051; bugfix on 0.2.9.1-alpha.
-
-  o Minor bugfixes (relay):
-    - Avoid a double-marked-circuit warning that could happen when we
-      receive DESTROY cells under heavy load. Fixes bug 20059; bugfix
-      on 0.1.0.1-rc.
-    - Honor DataDirectoryGroupReadable when tor is a relay. Previously,
-      initializing the keys would reset the DataDirectory to 0700
-      instead of 0750 even if DataDirectoryGroupReadable was set to 1.
-      Fixes bug 19953; bugfix on 0.0.2pre16. Patch by "redfish".
-
-  o Minor bugfixes (testing):
-    - Fix Raspbian build issues related to missing socket errno in
-      test_util.c. Fixes bug 21116; bugfix on 0.2.8.2. Patch by "hein".
-    - Remove undefined behavior from the backtrace generator by removing
-      its signal handler. Fixes bug 21026; bugfix on 0.2.5.2-alpha.
-    - Use bash in src/test/test-network.sh. This ensures we reliably
-      call chutney's newer tools/test-network.sh when available. Fixes
-      bug 21562; bugfix on 0.2.9.1-alpha.
-
-  o Minor bugfixes (tor-resolve):
-    - The tor-resolve command line tool now rejects hostnames over 255
-      characters in length. Previously, it would silently truncate them,
-      which could lead to bugs. Fixes bug 21280; bugfix on 0.0.9pre5.
-      Patch by "junglefowl".
-
-  o Minor bugfixes (unit tests):
-    - Allow the unit tests to pass even when DNS lookups of bogus
-      addresses do not fail as expected. Fixes bug 20862 and 20863;
-      bugfix on unit tests introduced in 0.2.8.1-alpha
-      through 0.2.9.4-alpha.
-
-  o Minor bugfixes (util):
-    - When finishing writing a file to disk, if we were about to replace
-      the file with the temporary file created before and we fail to
-      replace it, remove the temporary file so it doesn't stay on disk.
-      Fixes bug 20646; bugfix on 0.2.0.7-alpha. Patch by fk.
-
-  o Minor bugfixes (Windows services):
-    - Be sure to initialize the monotonic time subsystem before using
-      it, even when running as an NT service. Fixes bug 21356; bugfix
-      on 0.2.9.1-alpha.
-
-  o Minor bugfixes (Windows):
-    - Check for getpagesize before using it to mmap files. This fixes
-      compilation in some MinGW environments. Fixes bug 20530; bugfix on
-      0.1.2.1-alpha. Reported by "ice".
-
-  o Code simplification and refactoring:
-    - Abolish all global guard context in entrynodes.c; replace with new
-      guard_selection_t structure as preparation for proposal 271.
-      Closes ticket 19858.
-    - Extract magic numbers in circuituse.c into defined variables.
-    - Introduce rend_service_is_ephemeral() that tells if given onion
-      service is ephemeral. Replace unclear NULL-checkings for service
-      directory with this function. Closes ticket 20526.
-    - Refactor circuit_is_available_for_use to remove unnecessary check.
-    - Refactor circuit_predict_and_launch_new for readability and
-      testability. Closes ticket 18873.
-    - Refactor code to manipulate global_origin_circuit_list into
-      separate functions. Closes ticket 20921.
-    - Refactor large if statement in purpose_needs_anonymity to use
-      switch statement instead. Closes part of ticket 20077.
-    - Refactor the hashing API to return negative values for errors, as
-      is done as throughout the codebase. Closes ticket 20717.
-    - Remove data structures that were used to index or_connection
-      objects by their RSA identity digests. These structures are fully
-      redundant with the similar structures used in the
-      channel abstraction.
-    - Remove duplicate code in the channel_write_*cell() functions.
-      Closes ticket 13827; patch from Pingl.
-    - Remove redundant behavior of is_sensitive_dir_purpose, refactor to
-      use only purpose_needs_anonymity. Closes part of ticket 20077.
-    - The code to generate and parse EXTEND and EXTEND2 cells has been
-      replaced with code automatically generated by the
-      "trunnel" utility.
-
-  o Documentation (formatting):
-    - Clean up formatting of tor.1 man page and HTML doc, where <pre>
-      blocks were incorrectly appearing. Closes ticket 20885.
-
-  o Documentation (man page):
-    - Clarify many options in tor.1 and add some min/max values for
-      HiddenService options. Closes ticket 21058.
-
-  o Documentation:
-    - Change '1' to 'weight_scale' in consensus bw weights calculation
-      comments, as that is reality. Closes ticket 20273. Patch
-      from pastly.
-    - Clarify that when ClientRejectInternalAddresses is enabled (which
-      is the default), multicast DNS hostnames for machines on the local
-      network (of the form *.local) are also rejected. Closes
-      ticket 17070.
-    - Correct the value for AuthDirGuardBWGuarantee in the manpage, from
-      250 KBytes to 2 MBytes. Fixes bug 20435; bugfix on 0.2.5.6-alpha.
-    - Include the "TBits" unit in Tor's man page. Fixes part of bug
-      20622; bugfix on 0.2.5.1-alpha.
-    - Small fixes to the fuzzing documentation. Closes ticket 21472.
-    - Stop the man page from incorrectly stating that HiddenServiceDir
-      must already exist. Fixes 20486.
-    - Update the description of the directory server options in the
-      manual page, to clarify that a relay no longer needs to set
-      DirPort in order to be a directory cache. Closes ticket 21720.
-
-  o Removed features:
-    - The AuthDirMaxServersPerAuthAddr option no longer exists: The same
-      limit for relays running on a single IP applies to authority IP
-      addresses as well as to non-authority IP addresses. Closes
-      ticket 20960.
-    - The UseDirectoryGuards torrc option no longer exists: all users
-      that use entry guards will also use directory guards. Related to
-      proposal 271; implements part of ticket 20831.
-
-  o Testing:
-    - Add tests for networkstatus_compute_bw_weights_v10.
-    - Add unit tests circuit_predict_and_launch_new.
-    - Extract dummy_origin_circuit_new so it can be used by other
-      test functions.
-    - New unit tests for tor_htonll(). Closes ticket 19563. Patch
-      from "overcaffeinated".
-    - Perform the coding style checks when running the tests and fail
-      when coding style violations are found. Closes ticket 5500.
-
-