Mustang 2.1.0 was released on 2021-01-19 and contains

• The possibility to convert from CII to UBL (thanks to this library)
• XRechnung now exports as 2.0 (in Mustang 2.0.3 this was automatically switched on 2021-01-01)

Additionally, it

• fixed a charge/allowance rounding error #212
• corrected intra community supply tax exemption category code
• removed Tradeparty.getZip in favor of getZIP (as it’s also setZIP)