jversion.h: Update copyrights
diff --git a/jversion.h b/jversion.h
index ab4a2c5..4462b94 100644
--- a/jversion.h
+++ b/jversion.h
@@ -30,23 +30,25 @@
  * NOTE: It is our convention to place the authors in the following order:
  * - libjpeg-turbo authors (2009-) in descending order of the date of their
  *   most recent contribution to the project, then in ascending order of the
- *   date of their first contribution to the project
+ *   date of their first contribution to the project, then in alphabetical
+ *   order
  * - Upstream authors in descending order of the date of the first inclusion of
  *   their code
  */
 
 #define JCOPYRIGHT \
   "Copyright (C) 2009-2020 D. R. Commander\n" \
-  "Copyright (C) 2011-2016 Siarhei Siamashka\n" \
+  "Copyright (C) 2015, 2020 Google, Inc.\n" \
+  "Copyright (C) 2019 Arm Limited\n" \
   "Copyright (C) 2015-2016, 2018 Matthieu Darbois\n" \
+  "Copyright (C) 2011-2016 Siarhei Siamashka\n" \
   "Copyright (C) 2015 Intel Corporation\n" \
-  "Copyright (C) 2015 Google, Inc.\n" \
+  "Copyright (C) 2013-2014 Linaro Limited\n" \
   "Copyright (C) 2013-2014 MIPS Technologies, Inc.\n" \
-  "Copyright (C) 2013 Linaro Limited\n" \
+  "Copyright (C) 2009, 2012 Pierre Ossman for Cendio AB\n" \
   "Copyright (C) 2009-2011 Nokia Corporation and/or its subsidiary(-ies)\n" \
-  "Copyright (C) 2009 Pierre Ossman for Cendio AB\n" \
   "Copyright (C) 1999-2006 MIYASAKA Masaru\n" \
-  "Copyright (C) 1991-2016 Thomas G. Lane, Guido Vollbeding"
+  "Copyright (C) 1991-2017 Thomas G. Lane, Guido Vollbeding"
 
 #define JCOPYRIGHT_SHORT \
   "Copyright (C) 1991-2020 The libjpeg-turbo Project and many others"