==== Upgraded external libraries ====
* Updated es5-shim from v4.1.5 to v4.5.8
+* Updated composer/semver from v1.4.1 to v1.4.2
+* Updated wikimedia/php-session-serializer from v1.0.3 to v1.0.4
==== New external libraries ====
+* Added wikimedia/scoped-callback v1.0.0
+* Added wikimedia/wait-condition-loop v1.0.1
==== Removed and replaced external libraries ====