Fix dupe of lead;
Prevent leash breakage on the fence if there are other players' horses tied up there;
New config feature ignore_polymer
Update to 1.21.6 (1.21.7)
prevent crash on client side, casting issue
Added ability to make a horse publicly available and vice versa
new gamerule; disabled damage from players to owned horses; disabled feeding owned horses; disabled tempt for owned horses; added permission to interact with owned horses
hotfix: horses did not receive damage from the owner and /kill didn't work when the gamerule is enabled (it was not intended)
