[five-or-more] Reduce the minimum size

[Robert Roth <robertroth src gnome org>]

commit b7f0f9e67eda5f722af277dda53b51cd49866516
Author: Robert Roth <robert roth off gmail com>
Date:   Wed Oct 17 22:28:30 2018 +0300

    Reduce the minimum size

 src/view.vala | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/view.vala b/src/view.vala
index fa411bf..cc97558 100644
--- a/src/view.vala
+++ b/src/view.vala
@@ -23,7 +23,7 @@
 
 public class View : Gtk.DrawingArea
 {
-    private const int MINIMUM_BOARD_SIZE = 300;
+    private const int MINIMUM_BOARD_SIZE = 256;
 
     private Settings settings;
     private Game? game = null;