Contributing to this draft: The authors encourage the community to contribute to the ongoing development of this paper. People can suggest additions and changes, or provide comments via the Google Doc at http://bit.ly/compsoftrev - please identify your contributions if you want them to be acknowledged. This work emerged from the Sustainable Software Institute Collaborations Workshop 2016, in Edinburgh, UK (23/03/2016). After a one or two-week period of the preprint being publicly available for comment, we intend to submit it to an open access journal to undergo formal peer-review.