[Orekit Developers] Orekit 7.0 released

[MAISONOBE Luc <luc.maisonobe@c-s.fr>]

The Orekit team is pleased to announce that version 7.0 of Orekit has  
been released today.

Version 7.0 is a major release of Orekit. It introduces several new  
features and bug fixes.

The new features introduced in version 7.0 are the complete DSST  
semi-analytical propagator with short-periodics terms (only mean  
elements were available in previous version), extension to second  
order derivatives for many models (Cartesian coordinates, angular  
coordinates, attitude modes, ...), bilinear interpolator in  
Saastamoinen model, attitude overriding during impulsive maneuvers,  
general relativity force model, geographic zone detector, and ecliptic  
frame.

Several bugs have been fixed. One noteworthy fix concerns an  
inconsistency in Eckstein-Hechler propagator velocity, which leads to  
a change of the generated orbit type.

Version 7.0 depends on Apache Commons Math 3.4.1.

We want to thank everyone who has contributed to this release.

Luc Maisonobe, on behalf of the Orekit team