1.3

Impaling now affects mobs in rain
Swift sneak nerfed (sneak speed relative to walking: 0.1lvl+0.4 -> 0.1lvl+0.3; max 90% -> 80%)
Sweeping edge buffed (relative sweep dmg: (lvl^2+1)/(lvl^2+11) -> lvl^2/(lvl^2+5); max 72.2% -> 83.3%)
Max and Min cost 'per level above first' for the following enchantments have been doubled (8 -> 16): Smite, BOA, Impaling, Blast Prot, Fire Prot, Proj Prot; Essentially means the level distribution of these enchantments from enchanting tables has been reduced, ie you will get lower levels on average. Read https://minecraft.wiki/w/Enchantment_definition and https://minecraft.wiki/w/Enchanting_table_mechanics for more details.

HigherEnchants