Rename GTK+ to GTK in description

Author: danyeaw

gaphas/view/gtkview.py

@@ -31,7 +31,7 @@
 
 
 class GtkView(Gtk.DrawingArea, Gtk.Scrollable):
-    """GTK+ widget for rendering a gaphas.model.Model to a screen.  The view
+    """GTK widget for rendering a gaphas.model.Model to a screen.  The view
     uses Tools to handle events and Painters to draw. Both are configurable.
 
     The widget already contains adjustment objects (`hadjustment`,

pyproject.toml

@@ -1,7 +1,7 @@
 [tool.poetry]
 name = "gaphas"
 version = "3.11.2"
-description="Gaphas is a GTK+ based diagramming widget"
+description="Gaphas is a GTK diagramming widget"
 authors = [
     "Arjan J. Molenaar <gaphor@gmail.com>",
     "Dan Yeaw <dan@yeaw.me>"