Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  0fa2d8c78fb6c53ca5c5e8bc9125939e00bd39d1

Introduce ChangeOpFactory.

ChangeOpFactory allows us to sanely inject services into
ChangeOp instances without the need to drag all the required
services around explicitly.

Change-Id: I5fd9a8c15e26196645b8cf2e6945ab8937510a1e