expat-fatcat 0.2.5

expat-fatcat helps US taxpayers living abroad file their tax returns to comply with the IRS and FATCA (https://en.wikipedia.org/wiki/Foreign_Account_Tax_Compliance_Act). A significant pain point in this process is that foreign payments (income or deductions) must sometimes be converted to USD with a valid rate on the date of payment. This can readily add up to 40+ historical FX-rates to look up and then paste into the usual Excel accounting madness. Some people may consider a little copy-paste drudge work once a year a minor annoyance, but what are programming and APIs for if not injecting some fun into an otherwise dreary task?

The core functionality of expat-fatcat is an historical FX-rate lookup with smoothing in case of a missing exhange rate. Currently, we use the FX-service Quandl (https://www.quandl.com/) in QuandlRateCoverterToUSD, which is a sub-class of AbsRateConverterTo. Other FX-rate services could be readily integrated as required.