I would like to draw a circular arc with an arrow head, let's say following the
syntax for Circle[]:
ArcArrow[{x,y},r,{q1,q2}]
which should draw an arc between those two angles q1 and q2, with an arrow head at the q2=θ2 end. Is there some way to avoid either (a) the computation of Bezier-curve control points, or (b) a discrete polyline approximation?