curl and libcurl 7.72.0

 Public curl releases:         193
 Command line options:         232
 curl_easy_setopt() options:   277
 Public functions in libcurl:  82
 Contributors:                 2226

This release includes the following changes:

 o content_encoding: add zstd decoding support [1]
 o CURL_PUSH_ERROROUT: allow the push callback to fail the parent stream [31]
 o CURLINFO_EFFECTIVE_METHOD: added [34]

This release includes the following bugfixes:

 o appveyor: collect libcurl.dll variants with prefix or suffix [38]
 o bearssl: fix build with disabled proxy support [16]
 o checksrc: ban gmtime/localtime [40]
 o CI/azure: unconditionally enable warnings-as-errors with autotools [19]
 o CI/macos: enable warnings as errors for CMake builds [4]
 o CI/macos: set minimum macOS version [56]
 o CI/macos: unconditionally enable warnings-as-errors with autotools [21]
 o cirrus-ci: upgrade 11-STABLE to 11.4 [2]
 o CMake: fix test for warning suppressions [17]
 o cmake: fix windows xp build [13]
 o configure.ac: Sort features name in summary [6]
 o configure: allow disabling warnings [26]
 o configure: cleanup wolfssl + pkg-config conflicts when cross compiling. [48]
 o configure: show zstd "no" in summary when built without it [49]
 o curl: add %{method} to the -w variables
 o curl: improve the existing file check with -J [43]
 o curl_multi_setopt: fix compiler warning "result is always false" [42]
 o curl_version_info.3: CURL_VERSION_KERBEROS4 is deprecated [9]
 o CURLINFO_CERTINFO.3: fix typo [3]
 o CURLOPT_NOBODY.3: clarify what setting to 0 means [46]
 o docs: add date of 7.20 to CURLM_CALL_MULTI_PERFORM mentions [18]
 o docs: Update a few leftover mentions of DarwinSSL [29]
 o doh: remove redundant cast [20]
 o file2memory: use a define instead of -1 unsigned value [30]
 o ftpserver: don't verify SMTP MAIL FROM names [8]
 o getinfo: reset retry-after value in initinfo [51]
 o gnutls: repair the build with `CURL_DISABLE_PROXY` [5]
 o http2: close the http2 connection when no more requests may be sent [7]
 o http2: fix nghttp2_strerror -> nghttp2_http2_strerror in debug messages [11]
 o md(4|5): don't use deprecated macOS functions [23]
 o mprintf: Fix dollar string handling [54]
 o mprintf: Fix stack overflows [53]
 o multi: remove two checks always true [36]
 o multi: update comment to say easyp list is linear [44]
 o ngtcp2: adjust to recent sockaddr updates [27]
 o ngtcp2: update to modified qlog callback prototype [14]
 o nss: fix build with disabled proxy support [32]
 o ntlm: free target_info before (re-)malloc [55]
 o page-header: provide protocol details in the curl.1 man page [28]
 o quiche: handle calling disconnect twice [50]
 o setopt: unset NOBODY switches to GET if still HEAD [47]
 o socks: use size_t for size variable [39]
 o strdup: remove the odd strlen check [24]
 o test1119: verify stdout in the test [33]
 o test1139: make it display the difference on test failures
 o tool_getparam: make --krb option work again [10]
 o transfer: fix data_pending for builds with both h2 and h3 enabled [41]
 o transfer: fix memory-leak with CURLOPT_CURLU in a duped handle [15]
 o travis: update quiche builds for new boringssl layout [25]
 o url: silence MSVC warning [12]
 o util: silence conversion warnings [22]
 o WIN32: stop forcing narrow-character API [52]
 o windows: add unicode to feature list [35]

This release includes the following known bugs:

 o see docs/KNOWN_BUGS (https://curl.haxx.se/docs/knownbugs.html)

This release would not have looked like this without help, code, reports and
advice from friends like these:

  Alessandro Ghedini, Alex Kiernan, Baruch Siach, BrumBrum on hackerone,
  Carlo Marcelo Arenas Belón, causal-agent on github, Daniel Gustafsson,
  Daniel Stenberg, divinity76 on github, Ehren Bendler, Erik Johansson,
  Filip Salomonsson, Gilles Vollant, Gisle Vanem, ihsinme on github,
  Jeremy Maitin-Shepard, joey-l-us on github, Jonathan Cardoso Machado,
  Jonathan Nieder, Kamil Dudka, Laramie Leavitt, lilongyan-huawei on github,
  Marcel Raad, Marc Hörsken, Masaya Suzuki, Matthias Naegler,
  Nicolas Sterchele, NobodyXu on github, Peter Wu, Ray Satiro,
  Tatsuhiro Tsujikawa, tbugfinder on github, Tobias Stoeckmann, Viktor Szakats,
  xwxbug on github,
  (35 contributors)

        Thanks! (and sorry if I forgot to mention someone)

References to bug reports and discussions on issues:

 [1] = https://curl.haxx.se/bug/?i=5453
 [2] = https://curl.haxx.se/bug/?i=5668
 [3] = https://curl.haxx.se/bug/?i=5655
 [4] = https://curl.haxx.se/bug/?i=5716
 [5] = https://curl.haxx.se/bug/?i=5645
 [6] = https://curl.haxx.se/bug/?i=5656
 [7] = https://curl.haxx.se/bug/?i=5643
 [8] = https://curl.haxx.se/bug/?i=5639
 [9] = https://curl.haxx.se/bug/?i=5642
 [10] = https://bugzilla.redhat.com/1833193
 [11] = https://curl.haxx.se/bug/?i=5641
 [12] = https://curl.haxx.se/bug/?i=5638
 [13] = https://curl.haxx.se/bug/?i=5662
 [14] = https://curl.haxx.se/bug/?i=5675
 [15] = https://curl.haxx.se/bug/?i=5665
 [16] = https://curl.haxx.se/bug/?i=5666
 [17] = https://curl.haxx.se/bug/?i=5714
 [18] = https://curl.haxx.se/bug/?i=5744
 [19] = https://curl.haxx.se/bug/?i=5706
 [20] = https://curl.haxx.se/bug/?i=5704
 [21] = https://curl.haxx.se/bug/?i=5694
 [22] = https://curl.haxx.se/bug/?i=5695
 [23] = https://curl.haxx.se/bug/?i=5695
 [24] = https://curl.haxx.se/bug/?i=5697
 [25] = https://curl.haxx.se/bug/?i=5691
 [26] = https://curl.haxx.se/bug/?i=5689
 [27] = https://curl.haxx.se/bug/?i=5690
 [28] = https://curl.haxx.se/bug/?i=5679
 [29] = https://curl.haxx.se/bug/?i=5688
 [30] = https://curl.haxx.se/bug/?i=5683
 [31] = https://curl.haxx.se/bug/?i=5636
 [32] = https://curl.haxx.se/bug/?i=5667
 [33] = https://curl.haxx.se/bug/?i=5644
 [34] = https://curl.haxx.se/bug/?i=5511
 [35] = https://curl.haxx.se/bug/?i=5491
 [36] = https://curl.haxx.se/bug/?i=5676
 [38] = https://curl.haxx.se/bug/?i=5659
 [39] = https://curl.haxx.se/bug/?i=5654
 [40] = https://curl.haxx.se/bug/?i=5732
 [41] = https://curl.haxx.se/bug/?i=5734
 [42] = https://github.com/curl/curl/commit/61a08508f6a458fe21bbb18cd2a9bac2f039452b#commitcomment-40941232
 [43] = https://hackerone.com/reports/926638
 [44] = https://curl.haxx.se/bug/?i=5737
 [46] = https://curl.haxx.se/bug/?i=5729
 [47] = https://curl.haxx.se/bug/?i=5725
 [48] = https://curl.haxx.se/bug/?i=5605
 [49] = https://curl.haxx.se/bug/?i=5720
 [50] = https://curl.haxx.se/bug/?i=5726
 [51] = https://curl.haxx.se/bug/?i=5661
 [52] = https://curl.haxx.se/bug/?i=5658
 [53] = https://curl.haxx.se/bug/?i=5722
 [54] = https://curl.haxx.se/bug/?i=5722
 [55] = https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=24379
 [56] = https://curl.haxx.se/bug/?i=5723
