Add is_nil() and is_number() to LuaStack
Add is_nil() and is_number() to LuaStack

dbartolini/crown,mikymod/crown,taylor001/crown,dbartolini/crown,galek/crown,mikymod/crown,dbartolini/crown,taylor001/crown,galek/crown,mikymod/crown,taylor001/crown,galek/crown,mikymod/crown,taylor001/crown,dbartolini/crown,galek/crown