v4.4

• Re-introduced output of country code for Liechtenstein on payment parts, as expected by the specifications (see #199)

Good to know

• While this could be considered to be just a bugfix, a new minor version is released based on library policy because it is a visible change of the payment part for some invoice setups.

Kudos!

• Thanks to @markus-ksg for noticing this issue and describing the needed fix.