If you're a Chase Sapphire or Freedom cardholder, you now have a new benefit through Dec. 31: Earn an additional 10 points per dollar spent (on up to $1,500 per month) when you check out with Paze at participating merchants.This is notable news for anyone trying to rack up Ultimate Rewards points, since it could potentially change your spending strategy. We typically don't see broad points multiplier perks like this from Chase, so you'll want to…