Changes to llamas and their caravans

Llamas currently don't have enough use to be a reliable transport method in my opinion. Maybe if llamas had a set storage limit they would be more reliable, it would also be great for tamed llamas to spit on mobs that threaten the player. However this probably wouldn't be enough, if tamed llamas could teleport to the player that would greatly help with transport. Maybe they could only do this if they were recently in a caravan so that they wouldn't just randomly warp to the player. These changes would make the llama a viable transport method.