Introduction

Welcome to the December 2018 issue (Volume 9, Issue 4). We are grateful to all of the authors who submitted contributions to this issue; many will be published in the coming months. Also, we would like to take this opportunity to thank the reviewers who have given helpful feedback on submissions this year: Phil Benson, Alice Chik, Neil Curry, Anthony DiGiulio, Robert Dykes, Andy Gao, Yuri Imamura, Satoko Kato, Paul Lyddon, Diego Mideros, Garold Murray, Jo Mynard, Yoshio Nakai, Erin Okamoto, Christine O’Leary, Wareesiri Singhasiri, Raswan Sockol, Vance Stevens, Clair Taylor, Katherine Thornton, Fukuyo Tomita, Andrew Tweed, Stacey Vye, Satoko Watkins, Atsumi Yamaguchi, Kie Yamamoto Hisako, Yamashita, and Toshinori Yasuda.