curl and libcurl 7.70.0

 Public curl releases:         191
 Command line options:         230
 curl_easy_setopt() options:   270
 Public functions in libcurl:  82
 Contributors:                 2148

This release includes the following changes:

 o curl: add --ssl-revoke-best-effort to allow a "best effort" revocation check [5]
 o schannel: add "best effort" revocation check option: CURLSSLOPT_REVOKE_BEST_EFFORT [5]
 o writeout: support to generate JSON output with '%{json}' [8]

This release includes the following bugfixes:

 o ci/tests: fix Azure Pipelines not running Windows containers [25]
 o cirrus: re-enable the FreeBSD 13 CI builds [29]
 o cmake: add support for building with wolfSSL [9]
 o cmdline: fix handling of OperationConfig linked list (--next) [24]
 o configure: convert -I to -isystem as a last step [2]
 o configure: document 'compiler_num' for gcc [4]
 o configure: fix -pedantic-errors for GCC 5 and later [3]
 o connect: happy eyeballs cleanup [15]
 o curl-functions.m4: remove inappropriate AC_REQUIRE [26]
 o curl_setup: define _WIN32_WINNT_[OS] symbols [27]
 o CURLINFO_NUM_CONNECTS: improve accuracy [28]
 o docs: add warnings about FILE: URLs on Windows [19]
 o easy: fix curl_easy_duphandle for builds missing IPv6 that use c-ares [18]
 o gskit: use our internal select wrapper for portability [12]
 o http2: Fix erroneous debug message that h2 connection closed [21]
 o Makefile.m32: Improve windres parameter compatibility [17]
 o Makefile: run the cd commands in a subshell [1]
 o multi: improve parameter check for curl_multi_remove_handle [6]
 o OS400: update strings for ccsid-ifier (fixes the build) [30]
 o select: move duplicate select preparation code into Curl_select [14]
 o server/getpart: make the "XML-parser" stricter [20]
 o test2100: fix static port instead of dynamic value being used
 o tests/data: fix some XML formatting issues in test cases
 o tests: make Python-based servers compatible with Python 2 and 3 [22]
 o tests: remove python_dependencies for smbserver from our tree [16]
 o tls: remove the BACKEND define kludge from most backends [23]
 o tool_operate: fix add_parallel_transfers when more are in queue [10]
 o transfer: cap retries of "dead connections" to 5 [13]
 o vtls: fix ssl_config memory-leak on out-of-memory [11]
 o windows: suppress UI in all CryptAcquireContext() calls [7]

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:

  Brad King, Calvin Buckley, Dan Fandrich, Daniel Stenberg, Dima Tisnek,
  Frank Gevaerts, FuccDucc on github, Gavin Wong, Johannes Schindelin,
  Kamil Dudka, Karl Chen, Marcel Raad, Marc Hörsken, Markus Olsson,
  Mathias Gumz, Muhammad Herdiansyah, Paul Vixie, Ray Satiro, Rici Lake,
  Ross Burton, Simon Chalifoux, Stepan Efremov, Steven Penny, Timothe Litt,
  Tim Sedlmeyer, Tommy Petty, Viktor Szakats,
  (27 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=5073
 [2] = https://curl.haxx.se/bug/?i=5060
 [3] = https://curl.haxx.se/bug/?i=5067
 [4] = https://curl.haxx.se/bug/?i=5069
 [5] = https://curl.haxx.se/bug/?i=4981
 [6] = https://curl.haxx.se/bug/?i=5116
 [7] = https://curl.haxx.se/bug/?i=5088
 [8] = https://curl.haxx.se/bug/?i=4870
 [9] = https://curl.haxx.se/bug/?i=5095
 [10] = https://curl.haxx.se/bug/?i=4937
 [11] = https://curl.haxx.se/bug/?i=5108
 [12] = https://curl.haxx.se/bug/?i=5106
 [13] = https://curl.haxx.se/mail/lib-2020-03/0044.html
 [14] = https://curl.haxx.se/bug/?i=5078
 [15] = https://curl.haxx.se/bug/?i=4954
 [16] = https://curl.haxx.se/bug/?i=5094
 [17] = https://curl.haxx.se/bug/?i=5099
 [18] = https://curl.haxx.se/bug/?i=5097
 [19] = https://curl.haxx.se/bug/?i=5066
 [20] = https://curl.haxx.se/bug/?i=5071
 [21] = https://curl.haxx.se/bug/?i=5118
 [22] = https://curl.haxx.se/bug/?i=5104
 [23] = https://curl.haxx.se/bug/?i=5122
 [24] = https://curl.haxx.se/bug/?i=5120
 [25] = https://curl.haxx.se/bug/?i=5117
 [26] = https://curl.haxx.se/bug/?i=5126
 [27] = https://curl.haxx.se/bug/?i=4995
 [28] = https://curl.haxx.se/bug/?i=5135
 [29] = https://curl.haxx.se/bug/?i=5091
 [30] = https://curl.haxx.se/bug/?i=5132