Added support for `vat-taxrate` as an extra field for the JS frontend integration.

1.6.1

Updated changelog

Added support for setting your own "business country code"

Merge pull request #9 from mpociot/analysis-8Qo4mq

Applied fixes from StyleCI

Romania reduces VAT to 20% in 2016

1.5.5

Romania reduces VAT to 20% in 2016