Curl and libcurl 7.54.0

 Public curl releases:         165
 Command line options:         207
 curl_easy_setopt() options:   245
 Public functions in libcurl:  61
 Contributors:                 1507

This release includes the following changes:
 o Add CURL_SSLVERSION_MAX_* constants to CURLOPT_SSLVERSION [19]
 o Add --max-tls [19]
 o Add CURLOPT_SUPPRESS_CONNECT_HEADERS [24]
 o Add --suppress-connect-headers [24]

This release includes the following bugfixes:

 o cmake: Replace invalid UTF-8 byte sequence [1]
 o tests: use consistent environment variables for setting charset
 o proxy: fixed a memory leak on OOM
 o ftp: removed an erroneous free in an OOM path
 o docs: de-duplicate file lists in the Makefiles [2]
 o ftp: fixed a NULL pointer dereference on OOM
 o gopher: fixed detection of an error condition from Curl_urldecode
 o url: fix unix-socket support for proxy-disabled builds [3]
 o test1139: allow for the possibility that the man page is not rebuilt
 o cyassl: get library version string at runtime
 o digest_sspi: fix compilation warning
 o tests: enable HTTP/2 tests to run with non-default port numbers
 o warnless: suppress compiler warning
 o darwinssl: Warn that disabling host verify also disables SNI [4]
 o configure: fix for --enable-pthreads [5]
 o checksrc.bat: Ignore curl_config.h.in, curl_config.h
 o no-keepalive.d: fix typo [6]
 o configure: fix --with-zlib when a path is specified [7]
 o build: fix gcc7 implicit fallthrough warnings [8]
 o fix potential use of uninitialized variables [9]
 o CURLOPT_SSL_CTX_FUNCTION.3: Fix EXAMPLE formatting errors [10]
 o CMake: Reorganize SSL support, separate WinSSL and SSPI [11]
 o CMake: Add DarwinSSL support [12]
 o CMake: Add mbedTLS support [13]
 o ares: return error at once if timed out before name resolve starts [14]
 o BINDINGS: added C++, perl, go and Scilab bindings
 o URL: return error on malformed URLs with junk after port number
 o KNOWN_BUGS: Add DarwinSSL won't import PKCS#12 without a password [15]
 o http2: Fix assertion error on redirect with CL=0 [16]
 o updatemanpages.pl: Update man pages to use current date and versions [17]
 o --insecure: clarify that this option is for server connections [18]
 o mkhelp: simplified the gzip code
 o build: fixed making man page in out-of-tree tarball builds
 o tests: disabled 1903 due to flakiness
 o openssl: add two /* FALLTHROUGH */ to satisfy coverity
 o cmdline-opts: fixed a few typos
 o authneg: clear auth.multi flag at http_done [20]
 o curl_easy_reset: Also reset the authentication state [21]
 o proxy: skip SSL initialization for closed connections [22]
 o http_proxy: ignore TE and CL in CONNECT 2xx responses [23]
 o tool_writeout: fixed a buffer read overrun on --write-out
 o make: regenerate docs/curl.1 by runinng make in docs [25]

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:

  Alexis La Goutte, Andrew Krieger, Antony74 on github, Brian Carpenter,
  Carlo Cannas, Carlo Teubner, Dan Fandrich, Daniel Stenberg, Desmond O. Chang,
  Giuseppe Persico, Greg Rowe, Isaac Boukris, Joel Depooter, Jozef Kralik,
  Justin Clift, Marc-Antoine Perennou, Marcel Raad, mccormickt12 on github,
  Michael Kaufmann, Michael Maltese, mkzero on github, Orange Tsai,
  Peter Pentchev, Peter Wu, Ray Satiro, Simon Warta, Steve Brokenshire,
  Sylvestre Ledru, Tatsuhiro Tsujikawa, Thomas Glanzmann,
  (30 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=1275
 [2] = https://curl.haxx.se/bug/?i=1287
 [3] = https://curl.haxx.se/bug/?i=1289
 [4] = https://curl.haxx.se/bug/?i=1240
 [5] = https://curl.haxx.se/bug/?i=1295
 [6] = https://curl.haxx.se/bug/?i=1301
 [7] = https://curl.haxx.se/bug/?i=1292
 [8] = https://curl.haxx.se/bug/?i=1297
 [9] = https://curl.haxx.se/bug/?i=1304
 [10] = https://curl.haxx.se/bug/?i=1290
 [11] = https://curl.haxx.se/bug/?i=1228
 [12] = https://curl.haxx.se/bug/?i=1228
 [13] = https://curl.haxx.se/bug/?i=1228
 [14] = https://curl.haxx.se/mail/lib-2017-03/0004.html
 [15] = https://curl.haxx.se/bug/?i=1308
 [16] = https://curl.haxx.se/bug/?i=1286
 [17] = https://curl.haxx.se/bug/?i=1058
 [18] = https://curl.haxx.se/mail/lib-2017-03/0002.html
 [19] = https://curl.haxx.se/bug/?i=1166
 [20] = https://curl.haxx.se/bug/?i=1095
 [21] = https://curl.haxx.se/bug/?i=1095
 [22] = https://curl.haxx.se/bug/?i=1239
 [23] = https://curl.haxx.se/bug/?i=1317
 [24] = https://curl.haxx.se/bug/?i=783
 [25] = https://curl.haxx.se/mail/lib-2017-03/0017.html