[smuxi] Frontend-GNOME: update copyright info

[Mirco M. M. Bauer <mmmbauer src gnome org>]

commit 8e337f3c2dcc66c4e52fceeb0908f533eaf782ad
Author: Mirco Bauer <meebey meebey net>
Date:   Sun Dec 30 18:07:25 2018 +0100

    Frontend-GNOME: update copyright info

 src/Frontend-GNOME/AboutDialog.cs | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/src/Frontend-GNOME/AboutDialog.cs b/src/Frontend-GNOME/AboutDialog.cs
index b5762711..039474fd 100644
--- a/src/Frontend-GNOME/AboutDialog.cs
+++ b/src/Frontend-GNOME/AboutDialog.cs
@@ -46,7 +46,7 @@ namespace Smuxi.Frontend.Gnome
             if (!Frontend.IsLocalEngine) {
                 Version += "\n Protocol: " + Frontend.EngineProtocolVersion;
             }
-            Copyright = "Copyright © 2005-2017 Mirco Bauer <meebey meebey net> and other contributors";
+            Copyright = "Copyright © 2005-2018 Mirco Bauer <meebey meebey net> and other contributors";
             Authors = new string[] {
                 "Mirco Bauer <meebey meebey net>",
                 "David Paleino <dapal debian org>",
@@ -56,7 +56,8 @@ namespace Smuxi.Frontend.Gnome
                 "Bianca Mix <heavydemon freenet de>",
                 "Oliver Schneider <mail oli-obk de>",
                 "Carlos Martín Nieto <cmn dwim me>",
-                "Andres G. Aragoneses <knocte gmail com>"
+                "Andres G. Aragoneses <knocte gmail com>",
+                "Ondřej Hošek <ondra hosek gmail com>"
             };
             Artists = new string[] {
                 "Jakub Steiner <jimmac ximian com>",