Coupon is applied after taxes

Hey there! This module is fantastic and I just wanted to suggest a small tweak. That you set the rule in 'sell price calculation rules' to -1 rather then 0. When using this module with Commerce Canadian taxes the coupon is applied after the taxes. :S

I think in general it would make sense to set this rule to -1 since you do want to apply this before anything else... or am I wrong here?

Any way, just a thought.