:arrow_up: Update libraries.

michelf/php-markdown (1.7.0 => 1.8.0)
ezyang/htmlpurifier (v4.9.3 => v4.10.0)
commerceguys/intl (v0.7.4 => v0.7.5)
sabre/http (4.2.3 => v4.2.4)
sabre/vobject (4.1.3 => 4.1.5)

5 files changed, 16 insertions, 7 deletions

diff --git a/vendor/sabre/http/.travis.yml b/vendor/sabre/http/.travis.yml
index 8ae84d90f..9e4964b9d 100644
--- a/vendor/sabre/http/.travis.yml
+++ b/vendor/sabre/http/.travis.yml
@@ -9,6 +9,8 @@ php:
 
 matrix:
   fast_finish: true
+  allow_failures:
+  - php: hhvm
 
 env:
   matrix:
diff --git a/vendor/sabre/http/CHANGELOG.md b/vendor/sabre/http/CHANGELOG.md
index 00be2d887..d3dd8b2d9 100644
--- a/vendor/sabre/http/CHANGELOG.md
+++ b/vendor/sabre/http/CHANGELOG.md
@@ -1,6 +1,13 @@
 ChangeLog
 =========
 
+4.2.4 (2018-02-23)
+------------------
+
+* #69: Sending `charset="UTF-8"` on Basic authentication challenges per
+  [rfc7617][rfc7617].
+
+
 4.2.3 (2017-06-12)
 ------------------
 
@@ -12,7 +19,6 @@ ChangeLog
 
 * #72: Handling clients that send invalid `Content-Length` headers.
 
-
 4.2.1 (2016-01-06)
 ------------------
 
@@ -259,4 +265,5 @@ Before 2.0.0, this package was built-into SabreDAV, where it first appeared in
 January 2009.
 
 [psr-http]: https://github.com/php-fig/fig-standards/blob/master/proposed/http-message.md
-[rfc-7240]: http://tools.ietf.org/html/rfc7240
+[rfc7240]: http://tools.ietf.org/html/rfc7240
+[rfc7617]: https://tools.ietf.org/html/rfc7617
diff --git a/vendor/sabre/http/lib/Auth/Basic.php b/vendor/sabre/http/lib/Auth/Basic.php
index 60633b957..c263e3f9b 100644
--- a/vendor/sabre/http/lib/Auth/Basic.php
+++ b/vendor/sabre/http/lib/Auth/Basic.php
@@ -55,7 +55,7 @@ class Basic extends AbstractAuth {
      */
     function requireLogin() {
 
-        $this->response->addHeader('WWW-Authenticate', 'Basic realm="' . $this->realm . '"');
+        $this->response->addHeader('WWW-Authenticate', 'Basic realm="' . $this->realm . '", charset="UTF-8"');
         $this->response->setStatus(401);
 
     }
diff --git a/vendor/sabre/http/lib/Sapi.php b/vendor/sabre/http/lib/Sapi.php
index 6fc6452e4..054380e73 100644
--- a/vendor/sabre/http/lib/Sapi.php
+++ b/vendor/sabre/http/lib/Sapi.php
@@ -77,12 +77,12 @@ class Sapi {
             if (is_resource($body) && get_resource_type($body) == 'stream') {
                 if (PHP_INT_SIZE !== 4){
                     // use the dedicated function on 64 Bit systems
-                    stream_copy_to_stream($body, $output, $contentLength);  
+                    stream_copy_to_stream($body, $output, $contentLength);
                 } else {
                     // workaround for 32 Bit systems to avoid stream_copy_to_stream
                     while (!feof($body)) {
-                        fwrite($output, fread($body, 8192));    
-                    }   
+                        fwrite($output, fread($body, 8192));
+                    }
                 }
             } else {
                 fwrite($output, $body, $contentLength);
diff --git a/vendor/sabre/http/lib/Version.php b/vendor/sabre/http/lib/Version.php
index aeb080e93..c40532ae8 100644
--- a/vendor/sabre/http/lib/Version.php
+++ b/vendor/sabre/http/lib/Version.php
@@ -14,6 +14,6 @@ class Version {
     /**
      * Full version number
      */
-    const VERSION = '4.2.3';
+    const VERSION = '4.2.4';
 
 }