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:                 2142

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 cmake: add support for building with wolfSSL [9]
 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 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 select: move duplicate select preparation code into Curl_select [14]
 o server/getpart: make the "XML-parser" stricter [20]
 o tests/data: fix some XML formatting issues in test cases
 o tests: remove python_dependencies for smbserver from our tree [16]
 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, Dan Fandrich, Daniel Stenberg, Dima Tisnek, Frank Gevaerts,
  Gavin Wong, Johannes Schindelin, Karl Chen, Marc Hörsken, Markus Olsson,
  Mathias Gumz, Muhammad Herdiansyah, Paul Vixie, Ray Satiro, Stepan Efremov,
  Steven Penny, Tim Sedlmeyer, Viktor Szakats,
  (18 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