Does the Savage Attacker feat apply to Sneak Attack or Divine Smite?

@JeremyECrawford Does the Savage Attacker feat apply to additional effects like the Rogue's Sneak Attack and Paladin's Divine Smite?

— Nathaemius Varrowe (@dmvarrowe69) December 13, 2015

Savage Attacker is meant to apply to the weapon's damage dice only. #DnD https://t.co/ESz6teZQ5w

— Jeremy Crawford (@JeremyECrawford) December 24, 2015