Arc Style (5.0.4)

Arcs have been entirely redesigned
They now have:
- A color (rather than a color tag)
- 3 available Head Positions
- 3 available Head Styles
- 8 available Line Styles

It is also possible to define Head Length, Width, and the thickness
All the arc style properties can be directly modified by using the Global Style tool or, property per property, by using the arc contextual menu. A double-click on the arc also opens the Arc Style Editor.

Here are the new Fixed and Temporal arcs
