Fusiones main _pt subroutines
Amended tests routines
All parameters are trajectories - even static ones
Param as Trajectories: modified the rest

There is an issue with kdvSVLauncher.  It was
returning decent SV beforehand, now it's just
numerical instability...
Mainly change in kdvParam (getitem)

and some cosmethic changes here and there...
still looking for the bug in SVLauncher
Version 2.0.0 : time dependant parameters