Classes

Nitwit:

 * Nothing

Farmer:

 * Chance for double crops
 * Bone meal 2x effectiveness

Rancher:

 * Chance for 2x offspring
 * Chance for extra mob loot

Miner:

 * Faster stone mine speed
 * No exhaustion from breaking blocks

Lumberjack:

 * Cut entire trees instantly unles sneaking
 * 1 Log = 6 Planks

Cook:

 * Crafted food has better saturation
 * More experience gained from smokers

Blacksmith:

 * Crafted equipment has small buffs
 * Anvils cost less material
 * Combining equipment in anvil restores more durability

Cleric:

 * Double potion duration using water in a cauldron
 * Better enchantments from the enchantment table

Merchant:

 * Villagers never run out of trade stock
 * More offers from wandering traders

Explorer:

 * Start with compass, clock, and 9 maps
 * No exhaustion from sprinting

Warrior:

 * Weapons deal more damage
 * Less slowdown when using shield

Archer:

 * Increased projectile accuracy
 * Less slowdown when using bow

Rogue:

 * Nameplate always invisible through walls
 * Enter stealth after sneaking for 10 seconds
 * Stealth: make less sound, deal extra damage from behind. Ends when you stop sneaking or attack someone.

Beastmaster:

 * Tamed animals gain bonus health and damage
 * Share potion effects with nearby tamed animals (edited)