Main differences between V4.9 and V4.8

PATRIUS V4.9 is a major release adding some new features and correcting some bugs.

New functionalities

ICRF is now the root frame for all frames (formerly the GCRF) (no impact for users)
New frames have been added to CelestialBody classes splitting IAU data in constant, secular and harmonic parts (icrf, inertial equator, mean equator, true equator, constant rotating, mean rotating, true rotating).
An object CelestialBody has now a GeometricBodyShape linked to it
FacetCelestialBody has been renamed in FacetBodyShape. Dependency to CelestialBody has been removed. use userCelestialBody with a FacetBodyShape instead.
PVCoordinatesProvider.getNativeFrame method has been added. it returns the "native frame" of the PVCoordinatesProvider
Convention used for Tchebychev polynomials is now the SPICE convention
New class NotCriterion returning the complementary of a phenomenon
A frame can define its own referential through method Frame.setReferential()
Intersection computation on celestial bodies now returns only the "front" intersection with line of sight. i.e. intersections behind the line of sight are not returned.
A new detector ExtremaGenericDetector has been added. It detects the extremum (through cancellation of derivative) of un underlying detector. It can then be used recursively to detect nth order derivatives of a detector.

The class OrCriterion has been fixed
Frame change in class QuaternionPolynomialProfile is properly taken into account