Add steel ladder

mods/xpanes/init.lua

@@ -173,7 +173,7 @@ xpanes.register_pane("bar", {
 	textures = {"xpanes_bar.png","xpanes_bar.png","xpanes_space.png"},
 	inventory_image = "xpanes_bar.png",
 	wield_image = "xpanes_bar.png",
-	groups = {snappy=2, cracky=3, oddly_breakable_by_hand=3, pane=1},
+	groups = {cracky=2, pane=1},
 	sounds = default.node_sound_stone_defaults(),
 	recipe = {
 		{"default:steel_ingot", "default:steel_ingot", "default:steel_ingot"},