[gnome-latex] App: update copyright in about dialog for 2019 (10 years!)

[Sébastien Wilmet <swilmet src gnome org>]

commit 99b5f0e1f74f75eeaf3da1dd9ed9e8eea927674d
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Sat Mar 9 12:35:10 2019 +0100

    App: update copyright in about dialog for 2019 (10 years!)
    
    In July 24 of this year, it'll be exactly 10 years of
    LaTeXila/GNOME LaTeX!
    
    From the reviews on gnome-software, I know that at least one person has
    used this app to write his PhD thesis. By going to the GUADEC conference
    I also know that one person use or used this app almost every day. So I
    think that's a good achievement. It permitted me to learn a lot, to
    practice programming during the summer when I was a student, and then
    contributing down the stack (especially to the GtkSourceView library).

 src/glatex_app.vala | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/glatex_app.vala b/src/glatex_app.vala
index 23df187..4c956db 100644
--- a/src/glatex_app.vala
+++ b/src/glatex_app.vala
@@ -193,7 +193,7 @@ public class GlatexApp : Gtk.Application
     {
         string comments =
             _("GNOME LaTeX is a LaTeX editor for the GNOME desktop");
-        string copyright = "Copyright 2009-2018 – Sébastien Wilmet";
+        string copyright = "Copyright 2009-2019 – Sébastien Wilmet";
 
         string website = "https://wiki.gnome.org/Apps/GNOME-LaTeX";;