Fix menu bug regression.

Author: thomthom

src/testup/ui.rb

@@ -139,7 +139,7 @@ def self.init_ui
 
     # Menus
     if defined?(Sketchup)
-      menu_name = Sketchup.version < 21.1 ? 'Plugins' : 'Developer'
+      menu_name = Sketchup.version.to_f < 21.1 ? 'Plugins' : 'Developer'
       menu = UI.menu(menu_name).add_submenu(PLUGIN_NAME)
       menu.add_item(cmd_toggle_testup)
       menu.add_separator