Excel Financial functions in F#, version 2.0 released

When Luca Bolognese does a 2.0 release, he only fixes one bug - amazing! If you take a look at the testing he did for this library (with F# Interactive), you can see why.

I simply fixed a bug related to the Rate function (wrong name for parameters).

It is here: code.msdn.microsoft.com/FinancialFunctions