Corpses persist [Pet revival :D]

After a surge of inspiration, I've decided to work on the spyglass, and I think this new feature will be pretty useful for my private datapack, as there has been some murders going on there which I've had to get to the bottom of... No kidding, a tamed spider suddenly started tearing apart my tamed cow, it was meant to FOLLOW the cow not rip it to shreds, I only know it was the spider because I SAW it do it right in front of me later to the same cow after I revived it. Well anyway.

• Optimized 60stimer as well, since I rudely forgot about it
• Checking corpses with the spyglass now also tells you WHO last attacked them.