A feature request: Protein per calorie? I try to balance cost with calories, some food have 30g of protein but in 200 calories, and others in 500 calories (beca

A feature request: Protein per calorie? I try to balance cost with calories, some food have 30g of protein but in 200 calories, and others in 500 calories (because of extra fat/carbs). Would be nice to have this as a filter too!