This is the third and final issue for 2018. We continue in transition from publishing three issues a year to the concept of publish as ready. This has resulted in delays to processing and publishing, so we extend our apologies to both authors and readers. We currently have some twenty articles in review and delays are also occurring in this area in finding willing and receptive reviewers. We would appreciate authors suggesting reviewers as they submit articles. On behalf of Yaping Liu we extend seasons greetings to you all and look forward to a first in 2019 in our new livery!