Added new feature to limit hoppers, pistons, sticky pistons and observers for each chunk. Can be bypassed with mfm.bypasslimit.[type] this will only apply for block place event at this point and will not take into account possible block transfers between chunks with help of pistons as this action can be quite heavy on server to recheck each moved block on each piston action. Unless some one really needs that one too, then give me a PM on discord.