Draggable label
Add weight units and convenience functions to Units
WIP
SerialScale class complete
Expose SerialScale to host environment
Port setup possible through host environment
Negative value handling and improved robustness
Units can be passed through signals to script handlers
static methods in Units now invokable
Configuration widget for serially connected scales.
Merge branch 'development' into scale
WIP
Integrate scale measurements to New Batch window. Fixes #55.
Merge branch 'scale' into development