ENH: add missing Copyright statements
  ENH: update from v1912 to v2006

coding/style/style.md

@@ -606,3 +606,8 @@ The APA style is a commonly used standard and references are available in
 this format from many sources including
 [Citation Machine](http://www.citationmachine.net/apa/cite-a-book) and
 [Google Scholar]([http://scholar.google.com).
+
+
+----
+
+Copyright (C) 2019-2020 OpenCFD Ltd.