Adjust AUTHORS to reflect current state of the project

AUTHORS

@@ -1,19 +1,47 @@
-Original Author:
-Gerald Evenden
+--------------------------------------------------------------------------------
+Authors
+--------------------------------------------------------------------------------
+
+Original Author
+................................................................................
+
+Gerald Evenden (1935-2016)
+
+Maintainer(s)
+................................................................................
+
+Kristian Evers <kreve@sdfe.dk>
+Even Rouault <even.rouault@spatialys.com>
+
+
+Project Steering Committee
+--------------------------------------------------------------------------------
+
+Process and membership can be found at:
+https://proj4.org/community/rfc/rfc-1.html
+
+Chair
+................................................................................
+
+Kristian Evers <kreve@sdfe.dk>
+
+Members
+................................................................................
 
-Maintainer(s):
 Frank Warmerdam <warmerdam@pobox.com>
 Howard Butler <howard@hobu.co>
+Charles Karney <charles.karney@sri.com>
+Thomas Knudsen <thokn@sdfe.dk>
+Even Rouault <even.rouault@spatialys.com>
+Kurt Schwehr <schwehr@gmail.com>
+
+Contributors
+................................................................................
 
-Contributors:
 Brent Fraser <bfraser@geoanalytic.com>
 Chris Stuber <imap@chesapeake.net>
 Craig Bruce <cbruce@cubewerx.com>
 Victor Osipkov <vctos@email.com>
 Andrea Antonello <andrea.antonello@hydrologis.com>
-Charles Karney <charles.karney@sri.com>
-Karsten Engsager
 Knud Poder
-Kristian Evers <kreve@sdfe.dk>
-Thomas Knudsen <thokn@sdfe.dk>
-Even Rouault <even.rouault@spatialys.com>
+