X-ray player and entity tracking + from long distances

[70UNIK]

I would like to have the option to modify the distance entities can see you (and other targeted mobs), as well as enabling the option for them to see through blocks through any distance. This can make the existing experience more exciting, as anywhere you won't be safe from these mobs. EpicSiegeMod and ZombieAwareness offer examples of such (but are unfortunately stuck in 1.12).