Improved Villagers

Major Update:

Butchers can now harvest meat from pigs, cows, chickens and sheep.
Villagers now get willing after getting beetroots. -This fixes a vanilla bug
Villagers will now pick up emeralds, don't drop them.
Added an option to bypass the tab system for those who don't like the tabs or they are causing issues.
When you kill a villager, it now drops its inventory.
May have fixed the no GUI popping up issue on servers.
Fixed the notification marker recipe.
Fixed a bug where villagers from other mods got deleted. They will now spawn in small houses.
Decreased amount of time before villagers go inside when night time starts.
Villagers now move slower when going indoors, to fix them going super quick at nightime.