curl and libcurl 7.68.0

 Public curl releases:         187
 Command line options:         229
 curl_easy_setopt() options:   269
 Public functions in libcurl:  82
 Contributors:                 2056

This release includes the following changes:

 o curl: add --parallel-immediate [29]
 o curl: add --etag-compare and --etag-save [31]
 o XFERINFOFUNCTION: support CURL_PROGRESSFUNC_CONTINUE [36]
 o TLS: add BearSSL vtls implementation [37]
 o multi: add curl_multi_wakeup() [38]

This release includes the following bugfixes:

 o CURL-DISABLE: initial docs for the CURL_DISABLE_* defines [19]
 o HISTORY: added cmake, HTTP/3 and parallel downloads with curl
 o INSTALL.md: provide Android build instructions [10]
 o altsvc: bump to h3-24 [6]
 o build: fix for CURL_DISABLE_DOH [2]
 o checksrc.bat: Add a check for vquic and vssh directories [40]
 o checksrc: repair the copyrightyear check [25]
 o config-win32: cpu-machine-OS for Windows on ARM [13]
 o configure: avoid unportable `==' test(1) operator [1]
 o configure: fix typo in help text [4]
 o copyrights: fix copyright year range [25]
 o curl: fix --upload-file . hangs if delay in STDIN [35]
 o curl: fix -T globbing [16]
 o docs: Change 'experiemental' to 'experimental' [30]
 o doh: improced both encoding and decoding [11]
 o examples: add multi-poll.c [14]
 o lib: Move lib/ssh.h -> lib/vssh/ssh.h [9]
 o multi_poll: avoid busy-loop when called without easy handles attached [15]
 o ngtcp2: fix thread-safety bug in error-handling [33]
 o ngtcp2: free used resources on disconnect [7]
 o ngtcp2: handle key updates as ngtcp2 master branch tells us [8]
 o ngtcp2: increase QUIC window size when data is consumed [12]
 o ngtcp2: use overflow buffer for extra HTTP/3 data [5]
 o ntlm: USE_WIN32_CRYPTO check removed to get USE_NTLM2SESSION set [3]
 o openssl: Revert to less sensitivity for SYSCALL errors [26]
 o openssl: improve error message for SYSCALL during connect [27]
 o openssl: prevent recursive function calls from ctx callbacks [18]
 o pause: avoid updating socket if done was already called [22]
 o projects: Fix Visual Studio projects SSH builds [41]
 o projects: Fix Visual Studio wolfSSL configurations
 o quiche: reject HTTP/3 headers in the wrong order [17]
 o remove_handle: clear expire timers after multi_done() [20]
 o schannel: fix --tls-max for when min is --tlsv1 or default [39]
 o strerror: Fix an error looking up some Windows error strings
 o system.h: fix for MCST lcc compiler [23]
 o test1175: verify symbols-in-versions and libcurl-errors.3 in sync [28]
 o test1558: use double slash after file: [21]
 o test1560: require IPv6 for IPv6 aware URL parsing [24]
 o travis: build ngtcp2 with --enable-lib-only [32]
 o travis: export the CC/CXX variables when set [34]

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:

  3dyd on github, Anderson Sasaki, Andreas Falkenhahn, bdry on github,
  Bjoern Franke, Christian Schmitz, Christoph M. Becker, Cynthia Coan,
  Dan Fandrich, Daniel Gustafsson, Daniel Stenberg, David Benjamin,
  Gergely Nagy, Javier Blazquez, John Schroeder, Kamil Dudka, Leonardo Taccari,
  Marcel Raad, Maros Priputen, Massimiliano Fantuzzi, Max Kellermann,
  Melissa Mears, Michael Forney, Niall O'Reilly, Paul Hoffman,
  Paulo Roberto Tomasi, Peter Wu, Ray Satiro, Richard Bowker,
  SLDiggie on github, Tatsuhiro Tsujikawa, Tom van der Woerdt,
  Victor Magierski, Wyatt O'Day, Xiaoyin Liu,
  (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=4567
 [2] = https://curl.haxx.se/bug/?i=4565
 [3] = https://curl.haxx.se/bug/?i=3704
 [4] = https://curl.haxx.se/bug/?i=4570
 [5] = https://curl.haxx.se/bug/?i=4525
 [6] = https://curl.haxx.se/bug/?i=4604
 [7] = https://curl.haxx.se/bug/?i=4614
 [8] = https://curl.haxx.se/bug/?i=4612
 [9] = https://curl.haxx.se/bug/?i=4609
 [10] = https://curl.haxx.se/bug/?i=4606
 [11] = https://curl.haxx.se/bug/?i=4598
 [12] = https://curl.haxx.se/bug/?i=4600
 [13] = https://curl.haxx.se/bug/?i=4590
 [14] = https://curl.haxx.se/bug/?i=4596
 [15] = https://curl.haxx.se/bug/?i=4594
 [16] = https://curl.haxx.se/bug/?i=4588
 [17] = https://curl.haxx.se/bug/?i=4571
 [18] = https://curl.haxx.se/bug/?i=4585
 [19] = https://curl.haxx.se/bug/?i=4545
 [20] = https://curl.haxx.se/bug/?i=4575
 [21] = https://curl.haxx.se/bug/?i=4554
 [22] = https://curl.haxx.se/bug/?i=4563
 [23] = https://curl.haxx.se/bug/?i=4576
 [24] = https://curl.haxx.se/bug/?i=4556
 [25] = https://curl.haxx.se/bug/?i=4549
 [26] = https://curl.haxx.se/bug/?i=4624
 [27] = https://curl.haxx.se/bug/?i=4593
 [28] = https://curl.haxx.se/bug/?i=4628
 [29] = https://curl.haxx.se/bug/?i=4500
 [30] = https://curl.haxx.se/bug/?i=4618
 [31] = https://curl.haxx.se/bug/?i=4543
 [32] = https://curl.haxx.se/bug/?i=4646
 [33] = https://curl.haxx.se/bug/?i=4645
 [34] = https://curl.haxx.se/bug/?i=4637
 [35] = https://curl.haxx.se/bug/?i=2051
 [36] = https://curl.haxx.se/bug/?i=4599
 [37] = https://curl.haxx.se/bug/?i=4597
 [38] = https://curl.haxx.se/bug/?i=4418
 [39] = https://curl.haxx.se/bug/?i=4633
 [40] = https://curl.haxx.se/bug/?i=4607
 [41] = https://curl.haxx.se/bug/?i=4492