Version 6.0.1 released soon (??-Feb-2019)

This version is mainly a maintenance release, serving to fix a few minor bugs. Among others, we fixed some inconsistencies wrt the order of some of the numerical propagation schemes leading to minor issues with backward incompatibility. As of now, the choices of propagators is based on the local discretization error of the positions. In the table below the third and fourth columns refer to objects of class "wave" and class "traj", respectively

time.propa	time.propa.order	quantum propagator	classical propagators
splitting	1	Lie-Trotter	March frog
	2	Strang-Marchuk	Leap frog
	3	not available	Beeman
differencing	2	second order differencing	Velocity Verlet
	3	not available	Stoermer Verlet (1)

⁽¹⁾ local discretization error of momenta differing: O(1)