Villager job update

The only villager who actually works is the farmer. Other villagers should work too. I saw this in a Youtube video. E.g. fisherman would seek out the nearest river biome and fish there until his inventory is full and return to his barrel to deposit it. Also, the librarian recently got nerfed and I think if a librarian unlocks a trade while within 4 blocks of an enchanting/enchatment table and at least 5 bookshelves, it has a small chance to sell a book uncharacteristic to its biome. Basically, villagers should do their jobs and librarians should use enchanting/enchantment tables to enhance their trades.