Curl and libcurl 7.60.0

 Public curl releases:         174
 Command line options:         214
 curl_easy_setopt() options:   255
 Public functions in libcurl:  74
 Contributors:                 1705

This release includes the following changes:

 o Add CURLOPT_HAPROXYPROTOCOL, support for the HAProxy PROXY protocol [10]
 o Add --haproxy-protocol for the command line tool [10]
 o Add CURLOPT_DNS_SHUFFLE_ADDRESSES, shuffle returned IP addresses [12]

This release includes the following bugfixes:

 o FTP: fix typo in recursive callback detection for seeking [1]
 o test1208: marked flaky
 o HTTP: make header-less responses still count correct body size [2]
 o user-agent.d:: mention --proxy-header as well [3]
 o http2: fixes typo [4]
 o cleanup: misc typos in strings and comments [5]
 o rate-limit: use three second window to better handle high speeds [6]
 o examples/hiperfifo.c: improved
 o pause: when changing pause state, update socket state [7]
 o multi: improved pending transfers handling => improved performance [8]
 o curl_version_info.3: fix ssl_version description [9]
 o add_handle/easy_perform: clear errorbuffer on start if set [11]
 o darwinssl: fix iOS build [13]
 o cmake: add support for brotli [14]

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:

  Adam Brown, Chris Araman, Cyril B, Daniel Stenberg, dasimx on github,
  Don J Olmstead, Kobi Gurkan, Lawrence Matthews, Luz Paz, Patrick Monnerat,
  Philip Prindeville, Ray Satiro, Rick Deist, Vincas Razma, 刘佩东,
  (15 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=2380
 [2] = https://curl.haxx.se/bug/?i=2382
 [3] = https://curl.haxx.se/bug/?i=2381
 [4] = https://curl.haxx.se/bug/?i=2387
 [5] = https://curl.haxx.se/bug/?i=2389
 [6] = https://curl.haxx.se/bug/?i=2386
 [7] = https://curl.haxx.se/mail/lib-2018-03/0048.html
 [8] = https://curl.haxx.se/bug/?i=2369
 [9] = https://curl.haxx.se/bug/?i=2364
 [10] = https://curl.haxx.se/bug/?i=2162
 [11] = https://curl.haxx.se/bug/?i=2190
 [12] = https://curl.haxx.se/bug/?i=1694
 [13] = https://curl.haxx.se/bug/?i=2397
 [14] = https://curl.haxx.se/bug/?i=2392
