Updated Standard Tax rates for 1st Jan 2017

[johnnye]

No description provided.

[mattes]

thanks for bringing this up! living in the US now I wasn't aware of the change. I anticipated rate changes, that's why I added the *AtDate funcs but didn't implement them at that time.

I'm thinking about refactoring the var standardRate = map[string]float64{ map to something like:

type Rates struct {
  Since time.Time
  map[string]float64
}

var rates = []Rates{}

This would make it easy to just add partial changes for certain countries and have the *AtDate funcs recursively find the rate for a given date.

Is that change something you would want to look into? Otherwise I will do it as soon as I find more time.

[johnnye]

I'm not sure. In that document there is also the non standard rates for various countries. I think that would be more useful then the historic rates. Having both would mean completeness.

[mattes]

Closing this in favor or #2