Hi everyone,
Assuming no one finds any substantive issues, we plan on merging the ContentHandler feature (Wikidata branch) early next week, in time for 1.20wmf14 (assuming we're still calling this the "1.20" series then). The tracking bug for that is here: https://bugzilla.wikimedia.org/show_bug.cgi?id=38622
The tree is here: https://gerrit.wikimedia.org/r/gitweb?p=mediawiki/core.git;a=tree;h=refs/heads/Wikidata;hb=refs/heads/Wikidata
...and recent commits are here: https://gerrit.wikimedia.org/r/#/q/status:merged+project:mediawiki/core+branch:Wikidata,n,z
We'd like to get it in right after a deployment branch point so that it has some time to settle in master before we foist it on everyone.
Please take a look at this branch, and raise any issues with the branch or this plan on list.
Thanks! Rob