These times scales may be used in SP3-c files.

The support is compliant with ISO-8601 standard.

Fixes issue #237

Users can now tune max degree, max eccentricity power and max frequency
in true longitude for short period terms.

Fixes issue #236

This setting is independent from the mean elements
settings in DSST tutorial.

The type specified by user was ignored when computing variable
stepsize integrator tolerances.

The first implementation uses a single reflection coefficient.
The second implementation uses a pair of absorption and specular
reflection coefficients using the classical convention about
specular reflection.
The third implementation uses a pair of absorption and specular
reflection coefficients using the legacy convention from the 1995
CNES book.

Fixes issue #170

Fixes issue #232

Fixes issue #231

Implemented an FieldOfView event detector where the FoV can be attached to any
frame. Also added a test case.

The method allows projecting the Field Of View to ground, taking limb of
ellipsoid into account (including flatness) if Field Of View skims over
horizon.

This method computes points that lie on the limb as seen from an
external observer.

This detector supersedes both CircularFieldOfViewDetector and
DihedralFieldOfViewDetector, as it can handle any Field Of View shape.

Enable parsing lower case values as specified in item 6.5.6 in the ODM standard.
Fixes #230

This is work in progress! The detector is not tested at all.

This is related to issue #216.

Thanks to Carlos Casas for reporting the issue.

Fixes issue #214

Thanks to  Petrus Hyvönen for the report and for the patch.

Fixes issue #207
 

The data returned at API level are now consistent with SI units,
instead of being kilometer-based.

Fixes issue #217

Fixes issue #222

The interpolation can either use a fixed number of points or a
maximum time gap between points, for each mean elements
integration step.

This API allows to use both vector operator convention and frames
transform convention naturally. This is useful when axis/angles are
involved, or when composing rotations. This probably fixes one of
the oldest stumbling blocks for Orekit users.

Fixes issue #229

In computing the local hour angle DTM2000 assumed the input position was
expressed in a frame aligned with Earth's rotation axis. The local hour angle
computation is now done in ECEF to ensure this is true. Added a test case.

Previously the generic type of event handlers in AbstractDetector was a bit too
restrictive, preventing the use of one handler with multiple types of detectors.
The ? super T type is now used since an event handler is a consumer. Also added
a test case.

Fixes issue #227

The problems occurred when analytical propagators included
maneuvers (i.e. state resets)

Fixes issue #224.