added rotate_simple to side hopper to stop crashes

README.md

@@ -15,3 +15,5 @@ Released under WTFPL
 0.4 - Supports locked chest and protected chest
 
 0.5 - Works with 0.4.13's new shift+click for newly placed Hoppers
+
+0.6 - Remove formspec from hopper nodes to improve speed for servers

init.lua

@@ -74,6 +74,8 @@ minetest.register_node("hopper:hopper", {
 			.." takes stuff from hopper at "
 			..minetest.pos_to_string(pos))
 	end,
+
+	on_rotate = screwdriver.disallow,
 })
 
 -- hopper side
@@ -138,6 +140,8 @@ minetest.register_node("hopper:hopper_side", {
 			.." takes stuff from hopper at "
 			..minetest.pos_to_string(pos))
 	end,
+
+	on_rotate = screwdriver.rotate_simple,
 })
 
 -- suck in items on top of hopper