Changes in version 1.0.0 (2021-05-02)
+ Added a high-precision numerical orbital propagator
+ Added support for more frames of reference: GCRF and Keplerian orbital elements
+ More functions to convert between the different coordinate frames are available

Changes in version 0.99.1 (2021-03-22)
+ Fixed DESCRIPTION format
+ Fixed a bug in the conversion from TEME to ECEF frames of reference
+ Added conversion to geodesic latitude, longitude and altitude

Changes in version 0.99.0 (2021-03-21)
+ First version
+ Submitted to CRAN
