[CLOSED] Add serialisation for CQELS, C-SPARQL

<a href="https://github.com/keski"><img src="https://avatars3.githubusercontent.com/u/2837241?v=3&s=96" align="left" width="96" height="96" hspace="10"></img></a> **Issue by [keski](https://github.com/keski)**
_Tuesday Dec 01, 2015 at 17:15 GMT_
_Originally opened as _

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