THANKS.in: Add new authors

Update the THANKS.in file with the new Git commit authors.

THANKS.in

@@ -341,3 +341,17 @@ Peter (pirtoo)
 ylfingr
 Christian Kujau
 Christopher Odenbach
+Adrian Murphy
+Andreas Seemueller
+Andrew Berglund
+Bernd Apfel
+Daniel Stirnimann
+Elan Ruusamäe
+Greg Cox
+Johannes Engel
+Laurent Licour
+Matthieu Kermagoret
+Michael Melcher
+Sven Geggus
+Thomas Kurschel
+Yannick Charton