snap to component above
Layouting behaviour (width and columns)
fixed layouting and errorText widths
Arrows control data flow
add context menu for DataFlowArrows to create new components
add DataFlowMinimizer
fix wrong time of DataFlowArrow-initialization when constructing DataFlowComponent
fixed creation of DataFlowComponent label
added freeLayout (canvas) + corresponding part
first try of a better layout
no error if theres no minimizer component
Fixed #21 Overlapping arrows, fixed data propagation per reference
#16 component insertion and removal triggers re-alignment of following components
#16 fixed insertion, remember position of last inserted component and continue from there
remove copying of data via JSON since it ignores methods and doesn't work for cyclic data
add automatic activation of DataFlowArrow when it is used to create new component
changed snapping behaviour to just snap below near components
#16 realignment finished, done when component is dragged or minimized/maximized
little layout changes
#16 fixed alignment of top most component