Dear authors,
Thank you for your submission that has been seen by two reviewers (and myself). Both reviewers are in close agreement (and my own reading mirrors the reviewers) and are supportive of your work, although there are some issues raised regarding the assumptions of the work that require further, earlier discussion in your manuscript, as well as some other minor points. Your response to the queries addressed the issues and was clear in how the manuscript will be revised. I would therefore like to invite you to resubmit the revised version in light of your suggested changes. Please fully address the concerns the reviewers have raised, as you have outlined in your response. I look forward to receiving your revised manuscript for consideration.
Yours sincerely,
David Thornalley

Dear authors,
Thank you for submitting your revised version. You have implemented the suggested changes and I am happy to accept the manuscript for publication. Thank you for submitting to CP.
Yours sincerely
David Thornalley