wmde/WikibaseDataModelSerialization — pull request #70 by thiemowmde (2014-07-15 17:52:01+00:00)
Title: Do not ommit claims key when empty array

Should fix #67. See #69 for the first part.

[Bug: 66791](https://bugzilla.wikimedia.org/show_bug.cgi?id=66791)