including cmd line demo

• improved logging
• executable jar, cmd line demo
• maven build

first jar version

this jar version works for all 36 sepa countries and for all iban countries defined in IBAN REGISTRY Release 87 – May 2020, except LY.
The test works also for countries which have partial/experimental use of the IBAN system. See https://www.iban.com/structure/

v0.9-alpha initial development version

A library for dealing with iban.com/validation-api to get information about banks.

For an example see README.