Changes in version 2.0.19-stable (3 May 2012)
BUGFIXES (CORE):
 o Refactor event_persist_closure: raise and extract some common logic (bec22b4)
 o If time has jumped so we'd reschedule a periodic event in the past, schedule it for the future instead (dfd808c)
 o If a higher-priority event becomes active, don't continue running events of the current priority. (2bfda40)

BUGFIXES (SSL):
 o Fixed potential double-readcb execution with openssl bufferevents. (4e62cd1 Mark Ellzey)

BUGFIXES (DNS):
 o Cancel a probe request when the server is freed, and ignore cancelled probe callbacks (94d2336 Greg Hazel)
 o Remove redundant DNS_ERR_CANCEL check, move comment (46b8060 Greg Hazel)
 o When retransmitting a timed-out DNS request, pick a fresh nameserver. (3d9e52a)

DOCUMENTATION FIXES:
 o Fix a typo in the bufferevent documentation (98e9119)
 o Add missing ) to changelog; spotted by rransom (4c7ee6b)
 o Fix the website URL in the readme (f775521)

COMPILATION FIXES:
 o Fix a compilation error with MSVC 2005 due to use of mode_t (336dcae)
 o Configure with gcc older than 2.95 (4a6fd43 Sebastian Hahn)
 o Generate event-config.h with a single sed script (30b6f88 Zack Weinberg)

FORWARD-COMPATIBILITY:
 o Backport: provide EVENT_LOG_* names, and deprecate _EVENT_LOG_* (d1a03b2)

TESTING/DEBUGGING SUPPORT:
 o dns-example.c can now take a resolv.conf file on the commandline (6610fa5)
 o Make some evdns.c debug logs more verbose (d873d67)
 o Work-around a stupid gcov-breaking bug in OSX 10.6 (b3887cd)



Changes in version 2.0.18-stable (22 Mar 2012)
BUGFIXES (core):
 o Make uses of open() close-on-exec safe by introducing an internal evutil_open_closeonexec. (d2b5f72 Ross Lagerwall, 03dce42)

BUGFIXES (kqueue):
 o Properly zero the kevent in kq_setup_kevent() (c2c7b39 Sebastian Hahn)

BUILD FIXES:
 o Added OPENSSL_LDFLAGS env variable which is appended to SSL checks. (9278196 Mark Ellzey)
 o Changed OPENSSL_LDFLAGS to OPENSSL_LIBADD (2d67b63 Mark Ellzey)
 o Don't do clang version detection when disabling some flags (083296b Sebastian Hahn)

BUGFIXES (dns):
 o Stop crashing in evdns when nameserver probes give a weird error (bec5068)


Changes in version 2.0.17-stable (10 Feb 2012)

BUGFIXES (core):
 o Be absolutely sure to clear pncalls before leaving event_signal_closure (11f36a5)
 o check for sysctl before we use it (358c745 Mike Frysinger)
 o Remove bogus casts of socket to int before calling ev_callback (f032516)
 o Make evconnlistener work around bug in older Linux when getting nmapped (ecfc720)
 o Fix a list corruption bug when using event_reinit() with signals present (6e41cdc)
 o Fix a fd leak in event_reinit() (3f18ad1)
 o Do a memberwise comparison of threading function tables (c94a5f2 Nate R)
 o Use C-style comments in C source files (for compatibility with compilers such as xlc on AIX). (d84d917 Greg Hewgill)
 o Avoid crash when freeing event_iocp and using event_set_mem_functions (19715a6)
 o In the kqueue backend, do not report EBADF as an EV_READ (5d7bfa1 Nicholas Marriott)

BUGFIXES (evbuffer and bufferevents):
 o Fix behavior of evbuffer_peek(buf,-1,NULL,NULL,0) (c986f23 Zack Weinberg)
 o Loop on filtering SSL reads until we are blocked or exhausted. (5b4b812)

BUGFIXES (evhttp):
 o Force strict validation of HTTP version in response. (790f6b3 Catalin Patulea)

BUGFIXES (evdns):
 o evdns: fix a bug in circular-queue implementation (d6094b1)

BUILD FIXES:
 o Fix a silly compilation error with the sun compiler (1927776 Colin Watt)
 o Suppress a gcc warning from ignoring fwrite return in http-sample.c (7206e8c)

DOCUMENTATION FIXES:
 o Slightly clarify evbuffer_peek documentation (7bbf6ca)
 o Update copyright notices to 2012 (e49e289)

NEW APIS:
 o Backport evhttp_connection_get_bufferevent to Libevent 2.0 (da70fa7 Arno Bakker)

TESTS AND TEST FIXES:
 o Fix a race condition in the dns/bufferevent_connect_hostname test. (cba48c7)
 o Add function to check referential integrity of an event_base (27737d5)
 o Check event_base correctness at end of each unit test (3312b02)
 o Workaround in the unit tests for an apparent epoll bug in Linux 3.2 (dab9187)
 o Better workaround for Linux 3.2 edge-triggered epoll bug (9f9e259)

Changes in version 2.0.16-stable (18 Nov 2011)
BUGFIXES (core):
 o More detailed message in case of libevent self-debugging failure. (9e6a4ef Leonid Evdokimov)
 o epoll: close fd on alloc fail at initialization (1aee718 Jamie Iles)
 o Fix compile warning from saying event2/*.h inside a comment (447b0ba)
 o Warn when unable to construct base because of failing make_base_notifiable (4e797f3)
 o Don't try to make notifiable event_base when no threading fns are configured (e787413)

BUGFIXES (evbuffer):
 o unit test for remove_buffer bug (90bd620 Greg Hazel)
 o Fix an evbuffer crash in evbuffer_remove_buffer() (c37069c)

BUGFIXES (bufferevent_openssl):
 o Refactor amount-to-read calculations in buffervent_ssl consider_reading() (a186e73 Mark Ellzey)
 o Move SSL rate-limit enforcement into bytes_to_read() (96c562f)
 o Avoid spinning on OpenSSL reads (2aa036f Mark Ellzey)

BUGFIXES (dns)
 o Empty DNS reply with OK status is another way to say NODATA. (21a08d6 Leonid Evdokimov)

TESTING:
 o Tests for 94fba5b and f72e8f6 (d58c15e Leonid Evdokimov)
 o Test for commit aff6ba1 (f7841bf Leonid Evdokimov)
 o Style and comment tweaks for dns/leak* tests (5e42202)
 o improve test to remove at least one buffer from src (7eb52eb Greg Hazel)

DOCUMENTATION:
 o Add note about evhttp_send_reply_end to its doxygen (724bfb5)
 o Update copyright dates to 2011. (3c824bd)
 o Fix typo in whatsnew-2.0.txt (674bc6a Mansour Moufid)
 o Improve win32 behavior of dns-sample.c code (a3f320e Gisle Vanem)



Changes in version 2.0.15-stable (12 Oct 2011)
BUGFIXES (DNS):
 o DNS: add ttl for negative answers using RFC 2308 idea. (f72e8f6 Leonid Evdokimov)
 o Add DNS_ERR_NODATA error code to handle empty replies. (94fba5b Leonid Evdokimov)

BUFGIXES (bufferevents and evbuffers):
 o Make evbuffer callbacks get the right n_added value after evbuffer_add (1ef1f68 Alex)
 o Prefer mmap to sendfile unless a DRAINS_TO_FD flag is set. Allows add_file to work with SSL. (0ba0af9)

BUGFIXES (event loop):
 o When a signal callback is activated to run multiple times, allow event_base_loopbreak to work even before they all have run. (4e8eb6a)

DOCUMENTATION FIXES:
 o Fix docstring in dns.h (2b6eae5 Leonid Evdokimov)
 o refer to non-deprecated evdns functions in comments (ba5c27d Greg Hazel)

BUILD AND TESTING FIXES:
 o le-proxy and regress depend on openssl directly (9ae061a Sergey Avseyev)
 o Use _SOURCES, not _sources, in sample/Makefile.am (7f82382)
 o Fixed compiler warnings for unchecked read/write calls. (c3b62fd Mark Ellzey)
 o Make write-checking fixes use tt_fail_perror (2b76847)
 o Fix some "value never used" warnings with gcc 4.6.1 (39c0cf7)



Changes in version 2.0.14-stable (31 Aug 2011)
BUGFIXES (bufferevents and evbuffers):
 o Propagate errors on the underlying bufferevent to the user. (4a34394 Joachim Bauch)
 o Ignore OpenSSL deprecation warnings on OS X (5d1b255 Sebastian Hahn)
 o Fix handling of group rate limits under 64 bytes of burst (6d5440e)
 o Solaris sendfile: correctly detect amount of data sent (643922e Michael Herf)
 o Make rate limiting work with common_timeout logic (5b18f13)
 o clear read watermark on underlying bufferevent when creating filtering bev to fix potentially failing fragmented ssl handshakes (54f7e61 Joachim Bauch)

BUGFIXES (IOCP):
 o IOCP: don't launch reads or writes on an unconnected socket (495c227)
 o Make IOCP rate-limiting group support stricter and less surprising. (a98da7b)
 o Have test-ratelim.c support IOCP (0ff2c5a)
 o Make overlapped reads result in evbuffer callbacks getting invoked (6acfbdd)
 o Correctly terminate IO on an async bufferevent on bufferevent_free (e6af35d)

BUGFIXES (other):
 o Fix evsig_dealloc memory leak with debugging turned on. (9b724b2 Leonid Evdokimov)
 o Fix request_finished memory leak with debugging turned on. (aff6ba1 Leonid Evdokimov)

BUILD AND TESTING FIXES:
 o Allow OS-neutral builds for platforms where some versions have arc4random_buf (b442302 Mitchell Livingston)
 o Try to fix 'make distcheck' errors when building out-of-tree (04656ea Dave Hart)
 o Clean up some problems identified by Coverity. (7c11e51 Harlan Stenn)


Changes in version 2.0.13-stable (18 Jul 2011)
BUGFIXES
 o Avoid race-condition when initializing global locks (b683cae)
 o Fix bug in SSL bufferevents backed by a bev with a write high-watermarks (e050703 Joachim Bauch)
 o Speed up invoke_callbacks on evbuffers when there are no callbacks (f87f568 Mark Ellzey)
 o Avoid a segfault when all methods are disabled or broken (27ce38b)
 o Fix incorrect results from evbuffer_search_eol(EOL_LF) (4461f1a)
 o Add some missing checks for mm_calloc failures (89d5e09)
 o Replace an assertion for event_base_free(NULL) with a check-and-warn (09fe97d)
 o Report kqueue ebadf, epipe, and eperm as EV_READ events (1fd34ab)
 o Check if the `evhttp_new_object' function in `http.c' returns NULL. (446cc7a Mansour Moufid)
 o Use the correct printf args when formatting size_t (3203f88)
 o Complain if the caller tries to change threading cbs after setting them (cb6ecee)

DOCUMENTATION FIXES AND IMPROVEMENTS
 o Revise the event/evbuffer/bufferevent doxygen for clarity and accuracy (2888fac)
 o Update Doxyfile to produce more useful output (aea0555)

TEST FIXES
 o Fix up test_evutil_snprintf (caf695a)
 o Fix tinytest invocation from windows shell (57def34 Ed Day)

BUILD FIXES
 o Use AM_CPPFLAGS in sample/Makefile.am, not AM_CFLAGS (4a5c82d)
 o Fix select.c compilation on systems with no NFDBITS (49d1136)
 o Fix a few warnings on OpenBSD (8ee9f9c Nicholas Marriott)
 o Don't break when building tests from git without python installed (b031adf)
 o Don't install event_rpcgen.py when --disable-libevent-install is used (e23cda3 Harlan Stenn)
 o Fix AIX build issue with TAILQ_FOREACH definition (e934096)


Changes in version 2.0.12-stable (4 Jun 2011)
BUGFIXES
 o Fix a warn-and-fail bug in kqueue by providing kevent() room to report errors (28317a0)
 o Fix an assert-inducing fencepost bug in the select backend (d90149d)
 o Fix failing http assertion introducd in commit 0d6622e (0848814 Kevin Ko)
 o Fix a bug that prevented us from configuring IPv6 nameservers. (74760f1)
 o Prevent size_t overflow in evhttp_htmlescape. (06c51cd Mansour Moufid)
 o Added several checks for under/overflow conditions in evhttp_handle_chunked_read (a279272 Mark Ellzey)
 o Added overflow checks in evhttp_read_body and evhttp_get_body (84560fc Mark Ellzey)

DOCUMENTATION:
 o Add missing words to EVLOOP_NONBLOCK documentation (9556a7d)

BUILD FIXES
 o libssl depends on libcrypto, not the other way around. (274dd03 Peter Rosin)
 o Libtool brings in the dependencies of libevent_openssl.la automatically (7b819f2 Peter Rosin)
 o Use OPENSSL_LIBS in Makefile.am (292092e Sebastian Hahn)
 o Move the win32 detection in configure.in (ceb03b9 Sebastian Hahn)
 o Correctly detect openssl on windows (6619385 Sebastian Hahn)
 o Fix a compile warning with zlib 1.2.4 and 1.2.5 (5786b91 Sebastian Hahn)
 o Fix compilation with GCC 2, which had no __builtin_expect (09d39a1 Dave Hart)
 o Fix new warnings from GCC 4.6 (06a714f)
 o Link with -lshell32 and -ladvapi32 on Win32. (86090ee Peter Rosin)
 o Make the tests build when OpenSSL is not available. (07c41be Peter Rosin)
 o Bring in the compile script from automake, if needed. (f3c7a4c Peter Rosin)
 o MSVC does not provide S_ISDIR, so provide it manually. (70be7d1 Peter Rosin)
 o unistd.h and sys/time.h might not exist. (fe93022 Peter Rosin)
 o Make sure TINYTEST_LOCAL is defined when building tinytest.c (8fa030c Peter Rosin)
 o Fix winsock2.h #include issues with MSVC (3d768dc Peter Rosin)
 o Use evutil_gettimeofday instead of relying on the system gettimeofday. (0de87fe Peter Rosin)
 o Always use evutil_snprintf, even if OS provides it (d1b2d11 Sebastian Hahn)
 o InitializeCriticalSectionAndSpinCount requires _WIN32_WINNT >= 0x0403. (816115a Peter Rosin)
 o cygwin: make it possible to build DLLs (d54d3fc)



Changes in version 2.0.11-stable (27 Apr 2011)
  [Autogenerated from the Git log, sorted and cleaned by hand.]
BUGFIXES:
 o Fix evport handling of POLLHUP and POLLERR (b42ce4b)
 o Fix compilation on Windows with NDEBUG (cb8059d)
 o Check for POLLERR, POLLHUP and POLLNVAL for Solaris event ports (0144886 Trond Norbye)
 o Detect and handle more allocation failures. (666b096 Jardel Weyrich)
 o Use event_err() only if the failure is truly unrecoverable. (3f8d22a Jardel Weyrich)
 o Handle resize failures in the select backend better. (83e805a)
 o Correctly free selectop fields when select_resize fails in select_init (0c0ec0b)
 o Make --enable-gcc-warnings a no-op if not using gcc (3267703)
 o Fix a type error in our (unused) arc4random_stir() (f736198)
 o Correctly detect and stop non-chunked http requests when the body is too long (63a715e)
 o Have event_base_gettimeofday_cached() always return wall-clock time (a459ef7)
 o Workaround for http crash bug 3078187 (5dc5662 Tomash Brechko)
 o Fix incorrect assertions and possible use-after-free in evrpc_free() (4b8f02f Christophe Fillot)
 o Reset outgoing http connection when read data in idle state. (272823f Tomash Brechko)
 o Fix subtle recursion in evhttp_connection_cb_cleanup(). (218cf19 Tomash Brechko)
 o Fix the case when failed evhttp_make_request() leaved request in the queue. (0d6622e Tomash Brechko)
 o Fix a crash bug in evdns server circular list code (00e91b3)
 o Handle calloc failure in evdns. (Found by Dave Hart) (364291e)
 o Fix a memory leak on win32 socket->event map. (b4f89f0)
 o Add a forgotten NULL check to evhttp_parse_headers (12311ff Sebastian Hahn)
 o Fix possible NULL-deref in evdns_cancel_request (5208544 Sebastian Hahn)

PORTABILITY:
 o Fall back to sscanf if we have no other way to implement strtoll (453317b)
 o Build correctly on platforms without sockaddr_storage (9184563)
 o Try to build correctly on platforms with no IPv6 support (713c254)
 o Build on systems without AI_PASSIVE (cb92113)
 o Fix http unit test on non-windows platforms without getaddrinfo (6092f12)
 o Do not check for gethostbyname_r versions if we have getaddrinfo (c1260b0)
 o Include arpa/inet.h as needed on HPUX (10c834c Harlan Stenn)
 o Include util-internal.h as needed to build on platforms with no sockaddr_storage (bbf5515 Harlan Stenn)
 o Check for getservbyname even if not on win32. (af08a94 Harlan Stenn)
 o Add -D_OSF_SOURCE to fix hpux builds (0b33479 Harlan Stenn)
 o Check for allocation failures in apply_socktype_protocol_hack (637d17a)
 o Fix the check for multicast or broadcast addresses in evutil_check_interfaces (1a21d7b)
 o Avoid a free(NULL) if out-of-memory in evdns_getaddrinfo. Found by Dave Hart (3417f68)

DEFENSIVE PROGRAMMING:
 o Add compile-time check for AF_UNSPEC==PF_UNSPEC (3c8f4e7)

BUGS IN TESTS:
 o Fix test.sh output on solaris (b4f89b6 Dave Hart)
 o Make test-eof fail with a timeout if we never get an eof. (05a2c22 Harlan Stenn)
 o Use %s with printf in test.sh (039b9bd)
 o Add an assert to appease clang's static analyzer (b0ff7eb Sebastian Hahn)
 o Add a forgotten return value check in the unit tests (3819b62 Sebastian Hahn)
 o Actually send NULL request in http_bad_request_test (b693c32 Sebastian Hahn)
 o add some (void) casts for unused variables (65707d7 Sebastian Hahn)
 o Refactor test_getaddrinfo_async_cancel_stress() (48c44a6 Sebastian Hahn)
 o Be nice and "handle" error return values in sample code (4bac793 Sebastian Hahn)
 o Check return value of evbuffer_add_cb in tests (93a1abb Sebastian Hahn)
 o Remote some dead code from dns-example.c (744c745 Sebastian Hahn)
 o Zero a struct sockaddr_in before using it (646f9fe Sebastian Hahn)

BUILD FIXES:
 o Fix warnings about AC_LANG_PROGRAM usage (f663112 Sebastian Hahn)
 o Skip check for zlib if we have no zlib.h (a317c06 Harlan Stenn)
 o Fix autoconf bracket issues; make check for getaddrinfo include netdb.h (833e5e9 Harlan Stenn)
 o Correct an AM_CFLAGS to an AM_CPPFLAGS in test/Makefile.am (9c469db Dave Hart)
 o Fix make distcheck & installation of libevent 1 headers (b5a1f9f Dave Hart)
 o Fix compilation under LLVM/clang with --enable-gcc-warnings (ad9ff58 Sebastian Hahn)

FEATURES:
 o Make URI parser able to tolerate nonconformant URIs. (95060b5)

DOCUMENTATION:
 o Clarify event_set_mem_functions doc (926f816)
 o Correct evhttp_del_accept_socket documentation on whether socket is closed (f665924)
 o fix spelling mistake in whatsnew-2.0.txt (deb2f73)
 o Fix sample/http-server ipv6 fixes (eb692be)
 o Comment internal headers used in sample code. (4eb281c)
 o Be explicit about how long event loops run in event.h documentation (f95bafb)
 o Add comment to configure.in to explain gc-sections test logic (c621359)
 o Fix a couple of memory leaks in samples/http-server.c. Found by Dave Hart. (2e9f665)

BUILD IMPROVEMENTS:
 o Use the gcc -ffunction-segments feature to allow gc when linking with static libevent (0965c56 Dave Hart)
 o Add configure options to disable installation, regression tests (49e9bb7 Dave Hart)



Changes in version 2.0.10-stable (16 Dec 2010)
  [Autogenerated from the Git log, sorted and cleaned by hand.]
BUGFIXES
 o Minor fix for IOCP shutdown handling fix (2599b2d Kelly Brock)
 o Correctly notify the main thread when activating an event from a subthread (5beeec9)
 o Reject overlong http requests early when Expect:100-continue is set (d23839f Constantine Verutin)
 o EVUTIL_ASSERT: Use sizeof() to avoid "unused variable" warnings with -DNDEBUG. (b63ab17 Evan Jones)

CODE CLEANUPS
 o bufferevent-internal.h: Use the new event2/util.h header, not evutil.h (ef5e65a Evan Jones)
 o Use relative includes instead of system includes consistently. (fbe64f2 Evan Jones)
 o Make whitespace more consistent

TESTING
 o tests: Use new event2 headers instead of old compatibility headers. (4f33209 Evan Jones)

DOCUMENTATION
 o Document that the cpu_hint is only used on Windows with IOCP for now (57689c4)
 o Add stuff to "whats new in 2.0" based on reading include changes since August. (18adc3f)


Changes in 2.0.9-rc (30 Nov 2010):
  [Autogenerated from the Git log, sorted and cleaned by hand.]
NEW AND MODIFIED APIs
 o Add a function to change a listener's callback. (46ee061)
 o Make evbuffer_add_file take ev_off_t, not off_t (ac7e52d)
 o Make rate-limits go up to SIZE_MAX/EV_SSIZE_MAX, not just INT32_MAX (2cbb1a1)
 o Add a bufferevent_get_base function (aab49b6)

MAJOR BUGFIXES
 o Disable changelist for epoll by default because of Linux dup() bug; add an option and/or an envvar to reenable it for speed. (9531763)
 o Fix a 100%-CPU bug where an SSL connection would sometimes never stop trying to write (1213d3d)
 o Fix a nasty bug related to use of dup() with epoll on Linux (c281aba)
 o Fix bugs in posix thread-id calculation when sizeof(pthread_t) != sizeof(long) (fbaf077)
 o Fix some ints to evutil_socket_t; make tests pass on win64. (f817bfa Dimitre Piskyulev)
 o Set _EVENT_SIZEOF_VOID_P correctly on win32 and win64 (1ae82cd Dimitre Piskyulev)
 o Avoid double-invocation of user callback with EVUTIL_EAI_CANCEL (abf01ed)
 o Set SO_UPDATE_ACCEPT_CONTEXT on sockets from AcceptEx so that shutdown() can work (52aa419)
 o When closing a filtering bufferevent, clear callbacks on the underlying bufferevent (fc7b1b0)

NEW AND MODIFIED HTTP APIs
 o Add evhttp_parse_query_str to be used with evhttp_uri_parse. (2075fbc)
 o Add evhttp_response_code to remove one more reason to include http_struct.h (22e0a9b)
 o Define enumerators for all HTTP methods, including PATCH from RFC5789 (75a7341 Felix Nawothnig)
 o Functions to actually use evhttp_bound_socket with/as evconnlistener. (006efa7)
 o Add evhttp_request_get_command so code can tell GET from POST without peeking at the struct. (49f4bf7)
 o Introduce absolute URI parsing helpers. (86dd720 Pavel Plesov)
 o Revise evhttp_uri_parse implementation to handle more of RFC3986 (eaa5f1d)
 o Add evhttp_connection_get_base() to get the event_base from an http connection (cd00079)
 o Let evhttp_parse_query return -1 on failure (b1756d0)
 o New evhttp_uri(encode|decode) functions to handle + and NUL characters right (a8148ce)
 o Add evhttp_response_code to remove one more reason to include http_struct.h (22e0a9b)
 o Tweak interface for allowed methods (f5b391e)
 o Add evhttp server alias interface, correct flagging of proxy requests. (aab8c38 Christopher Davis)

HTTP BUGFIXES
 o Add some comments to http.c and make a few functions static. (90b3ed5)
 o Fix Content-Length when trying send more than 100GB of data (!) on an evhttp. (525da3e)
 o Fix a bug where we would read too much data in HTTP bodies or requests. (58a1cc6)
 o Correctly count req->body_size on http usage without Content-Length (8e342e5)
 o Avoid missed-request bug when entire http request arrives before data is flushed (74c0e86)
 o reset "chunked" flag when sending non-chunked reply (aa5f55f Joachim Bauch)
 o evhttp_encode_uri encodes all reserved characters, including !$'()*+,/:=@ (2e63a60)
 o Replace exact-version checks for HTTP/1.1 with >= or < checks (647e094)
 o evhttp: Return 501 when we get an unrecognized method, not 400. (536311a)
 o Don't disable reading from the HTTP connection after sending the request to be notified of connection-close in time (c76640b Felix Nawothnig)
 o Never call evhttp_readcb while writing. (0512487)
 o Try to fix an assertion failure related to close detection (0faaa39)
 o Correctly detect timeouts during http connects (04861d5)
 o Preliminary support for Continue expectation in evhttp. (fa9305f Christopher Davis)

OTHER BUGFIXES
 o Correct logic for realigning a chain in evbuffer_add (e4f34e8)
 o Fix a minor syntax error that most compilers didn't care about (e56ff65)
 o Fix some uses of int for socket in regress (5d389dc)
 o Check return value for ioctlsocket on win32 (f5ad31c Trond Norbye)
 o Fix som event_warns that should have been event_warnx (19c71e7)
 o Fix signal handler types for win64. (b81217f)
 o Try to clear up more size_t vs int/long issues. (598d133)
 o Make sure IOCP evconnlistener uses virtual events. (7b40a00 Christopher Davis)
 o Don't free evdns_request handles until after the callback is invoked (9ed30de)
 o Fix some more cancel-related bugs in getaddrinfo_async (c7cfbcf)
 o Make evdns_getaddrinfo_cancel threadsafe (d51b2fc)
 o Only clear underlying callbacks when the user hasn't reset them. (1ac5b23)
 o Fix bug in bufferevent_connect on an openssl bufferevent that already had an fd (4f228a1)
 o Resolve an evport bug in the thread/forking test (3a67d0b)
 o Make sure the CLOEXEC flag is set on fds we open for base notification (3ab578f)
 o Fix IRIX build.  sa_family collides with a #define in sys/socket.h on IRIX. (e874982 Kevin Bowling)
 o If not WIN32, include <sys/socket.h> in event2/util.h. (1cd45e5 Kevin Bowling)
 o Fix some C99-style comments to work with the xlC compiler. (c2e5e22 Kevin Bowling)
 o Add some checks since lack of TAILQ_FOREACH doesn't imply lack of FIRST, END, NEXT, or INSERT_BEFORE.  Quiet some warnings in XL C. (c4dc335 Kevin Bowling)
 o Reworked AIX __ss_family workaround to use AC_STRUCT_MEMBER. (2e2a3d7 Kevin Bowling)
 o Take select from <sys/select.h> when testing in autoconf.  AIX build fix. (a3a9f6b Kevin Bowling)
 o Fix snprintf related failures on IRIX. (3239073 Kevin Bowling)
 o Remove _event_initialized(); make event_initialized() a function(); make it consistent on windows and non-windows (652024b)
 o Do not let EVLOOP_ONCE exit the loop until all deferred callbacks have run (2d5e1bd)
 o Make EVLOOP_ONCE ignore internal events (0617a81)
 o Possible crash fix when freeing an underlying bufferevent of an openssl bufferevent (29f7623)

HTTP CLEANUPS
 o Stop using Libevent-1 headers in regress_http (1f507d7)
 o Modernize header usage in bench_http.c (e587069)
 o fix signed/unsigned warnings in http.c (74a91e5)
 o Update the HTTP regression tests to use Libevent2 apis for non-http stuff (d9ffa89)
 o Start porting http tests to not use legacy interfaces (8505a74)
 o Convert the rest of the http tests to be non-legacy unit tests. (9bb8239)
 o Rename the confusing "base" static variable in regress_http.c (353402a)
 o Stop accessing http request struct directly from in the unit tests. (0b137f4)
 o Refactor http version parsing into a single function (a38140b)

TESTING
 o Improvements to tinytest_macros.h (ad923a1)
 o Add a huge pile of tests for the new URI functions, and make them pass. (a5a76e6)
 o Unit tests for evhttp_uri_set* (bc98f5e)
 o Increase the skew tolerance to 2 seconds in thread/deferred_cb_skew (f806476 Christopher Davis)
 o Reorder backends in test.sh to match preference order in event.c (ece974f)
 o Add a stress test for getaddrinfo_cancel (da1bf52)
 o Units test for unexpected evhttp methods. (75e3320)

DOCUMENTATION
 o Document behavior of URI parsing more thoroughly. (3a33462)
 o Document that two bufferevent func
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