0.4

• Updated Pi4J to version 2
• Updated quasar to version 2
• Track the remaining amount of liquid of the connected bottles and prevent an order if the remaining liquid doesn’t reach. It is also able to switch between pumps on the fly. If one order empties one bottle, but another bottle with the same ingredient is connected, the application will empty the first container and will switch to the second one mid-production.

Breaking changes:

• The new Pi4J version now uses BCM numbers instead of the WiringPi numbers to identify the GPIO-pins. The gpio numbers of all pumps have to be updated.