Fixed #1211: add method to create angle-based orbit without derivatives
Closes #1211 (closed)
As extra work w.r.t. the feature, I've added a new interface for PositionAngleType
based (Field)Orbit (with link in OrbitType
) in anticipation of issues #1131 and #1214 (closed) (adding more non purely angle based coordinates and enabling choice of cache)
Edited by Romain Serra