==== New external libraries ====
* Added wikimedia/password-blacklist 0.1.4.
* …
+* Added guzzlehttp/guzzle 6.3.3 and dependents:
+ * guzzlehttp/promises 1.3.1
+ * guzzlehttp/psr7 1.5.0
+ * psr/http-message 1.0.1
+ * ralouphie/getallheaders 2.0.5
==== Changed external libraries ====
* Updated wikimedia/xmp-reader from 0.6.0 to 0.6.1.