Fixes #885

Fixes #833

This is a partial implementation for issue #855.

Fixes #878

Fixes #836

Previously there was no combination of methods that would generate a
rounded AbsoluteDate without UTC offset, which was the behavior of
AbsoluteDate.toString() in Orekit 10. Added methods and tests.

Previously the UTC offset was not copied from the original
TimeComponents to the rounded TimeComponents.

Fixes #849

The getters have been added for event shifter, slope filter and
predicate filter.

Fixes #837

Fixes #874

Fixes #872

Fixes #871

This is a partial implementation for issue #855.

Fixes #867

Fixes #868

Fixed #864

This adds support for dimension retrieval and yield feature between
providers.

Fixes #856

Fixes #862

These containers are intended as replacements for HashMap when the
number of keys is very small (such as in spacecraft states).

They have smaller overhead, are more debugger-friendly (when dealing
with additional states and derivatives), and all in-place
incrementation.

The new interfaces StackableAdder and IntegrableAdder allow to build
state incrementally according to some dependency order if some adders
require additional states or derivatives computed by other adders.

Fixes #853

FieldParameterDrivenDateIntervalDetector.

Fixes #848

These classes streamline several ways to trigger maneuvers.