diff --git a/RELEASE-NOTES.txt b/RELEASE-NOTES.txt
index 9645e27a0d..0751a4afb5 100644
--- a/RELEASE-NOTES.txt
+++ b/RELEASE-NOTES.txt
@@ -1,41 +1,30 @@
- Hipparchus 1.5 RELEASE NOTES
+ Hipparchus 1.6 RELEASE NOTES
-The Hipparchus team is pleased to announce the release of hipparchus-1.5
+The Hipparchus team is pleased to announce the release of hipparchus-1.6
The Hipparchus library is a library of mathematical components. It started as a fork of Apache Commons Math.
-This is a maintenance release. The main changes since last version are the introduction of field versions
-of bilinear interpolation, univariate interpolators, polynomials and polynomial spline functions,
-and the introduction of reset events in ODE.
+This is a maintenance release. The main changes are the addition of a field version of Vector2D, addition
+of an Optimum.of() factory method and a visibility change of the AbstractEvaluation constructor.
Changes in this version include:
New features:
-o issues/55: Added FieldBivariateFunction and make both BilinearInterpolatingFunction
- and PiecewiseBicubicSplineInterpolatingFunction implement it.
- Github: fixes #55.
-o Added FieldUnivariateInterpolator and make both LinearInterpolator,
- AkimaSplineInterpolator and SplineInterpolator implement it.
-o Added FieldPolynomialFunction and FieldPolynomialSplineFunction.
-o Add Action.RESET_EVENTS to ask the integrator to recheck all event detectors
- without recomputing the step. Use when the g function of one event detector
- depends on events occurring in another event detector.
-o issues/53: Fixed documentation for interpolation algorithms.
- Github: fixes #53.
+o Add Optimum.of(...).
+o Make AbstractEvaluation constructor public, fix javadoc.
+o Added field version of Vector2D.
+o issues/56: When exception message formatting fails still show a helpful message and stack trace.
Fixed Bugs:
-o Nullify corrected state after predict in abstract Kalman filter. Note that this affects
- only custom extensions of AbstractKalmanFilter because the implementations provided
- by Hipparchus (LinearKalmanFilter and ExtendedKalmanFilter) always call correction
- step after having called prediction step, so the nullified corrected state is reset
- properly at the end. This was initially reported as
- https://gitlab.orekit.org/orekit/orekit/issues/540. Thanks to Hao Peng.
-o issues/54: Avoid too many multi-step integrator restarts after event resetting derivatives.
- Github: fixes #54.
-o Fixed lines/polyhedrons intersection occurring on facets boundaries.
+o issues/62: Fixed missing safety check in multi-step integrators.
+o issues/61: Prevent stack overflow error when attempting integration with too large number of points.
+o issues/56: Show full precision in exception message when root bracketing fails.
+
For complete information on Hipparchus, including instructions on how to submit bug reports,
patches, or suggestions for improvement, see the Hipparchus website:
https://www.hipparchus.org/
+
+
diff --git a/hipparchus-clustering/src/changes/changes.xml b/hipparchus-clustering/src/changes/changes.xml
index de4b224612..0b16a73ca5 100644
--- a/hipparchus-clustering/src/changes/changes.xml
+++ b/hipparchus-clustering/src/changes/changes.xml
@@ -49,6 +49,12 @@ If the output is not quite correct, check for invisible trailing spaces!
Hipparchus Clustering Release Notes
+
+
+ No changes directly in this module. However, lower level Hipparchus modules did change,
+ hence a new release was needed.
+
+
No changes directly in this module. However, lower level Hipparchus modules did change,
diff --git a/hipparchus-core/src/changes/changes.xml b/hipparchus-core/src/changes/changes.xml
index 6cc17b22c7..463485bbac 100644
--- a/hipparchus-core/src/changes/changes.xml
+++ b/hipparchus-core/src/changes/changes.xml
@@ -49,7 +49,7 @@ If the output is not quite correct, check for invisible trailing spaces!
Hipparchus Core Release Notes
-
+
Prevent stack overflow error when attempting integration with too large number of points.
diff --git a/hipparchus-fft/src/changes/changes.xml b/hipparchus-fft/src/changes/changes.xml
index ff08489c61..2ef1cb2fe1 100644
--- a/hipparchus-fft/src/changes/changes.xml
+++ b/hipparchus-fft/src/changes/changes.xml
@@ -49,6 +49,12 @@ If the output is not quite correct, check for invisible trailing spaces!
Hipparchus FFT Release Notes
+
+
+ No changes directly in this module. However, lower level Hipparchus modules did change,
+ hence a new release was needed.
+
+
No changes directly in this module. However, lower level Hipparchus modules did change,
diff --git a/hipparchus-filtering/src/changes/changes.xml b/hipparchus-filtering/src/changes/changes.xml
index 6ab79328f9..b2bc5b408e 100644
--- a/hipparchus-filtering/src/changes/changes.xml
+++ b/hipparchus-filtering/src/changes/changes.xml
@@ -49,6 +49,12 @@ If the output is not quite correct, check for invisible trailing spaces!
Hipparchus Filtering Release Notes
+
+
+ No changes directly in this module. However, lower level Hipparchus modules did change,
+ hence a new release was needed.
+
+
diff --git a/hipparchus-fitting/src/changes/changes.xml b/hipparchus-fitting/src/changes/changes.xml
index 9de7d11f1e..598f5d9139 100644
--- a/hipparchus-fitting/src/changes/changes.xml
+++ b/hipparchus-fitting/src/changes/changes.xml
@@ -49,6 +49,12 @@ If the output is not quite correct, check for invisible trailing spaces!
Hipparchus Fitting Release Notes
+
+
+ No changes directly in this module. However, lower level Hipparchus modules did change,
+ hence a new release was needed.
+
+
No changes directly in this module. However, lower level Hipparchus modules did change,
diff --git a/hipparchus-geometry/src/changes/changes.xml b/hipparchus-geometry/src/changes/changes.xml
index 5a9fdc618c..256a16babf 100644
--- a/hipparchus-geometry/src/changes/changes.xml
+++ b/hipparchus-geometry/src/changes/changes.xml
@@ -49,7 +49,8 @@ If the output is not quite correct, check for invisible trailing spaces!
Hipparchus Geometry Release Notes
-
+
Added field version of Vector2D.
diff --git a/hipparchus-migration/src/changes/changes.xml b/hipparchus-migration/src/changes/changes.xml
index 6ba67248e0..3a2b1be609 100644
--- a/hipparchus-migration/src/changes/changes.xml
+++ b/hipparchus-migration/src/changes/changes.xml
@@ -49,6 +49,12 @@ If the output is not quite correct, check for invisible trailing spaces!
Hipparchus Migration Release Notes
+
+
+ No changes directly in this module. However, lower level Hipparchus modules did change,
+ hence a new release was needed.
+
+
No changes directly in this module. However, lower level Hipparchus modules did change,
diff --git a/hipparchus-ode/src/changes/changes.xml b/hipparchus-ode/src/changes/changes.xml
index f39aba8b49..990a831f75 100644
--- a/hipparchus-ode/src/changes/changes.xml
+++ b/hipparchus-ode/src/changes/changes.xml
@@ -49,6 +49,12 @@ If the output is not quite correct, check for invisible trailing spaces!
Hipparchus ODE Release Notes
+
+
+ No changes directly in this module. However, lower level Hipparchus modules did change,
+ hence a new release was needed.
+
+
diff --git a/hipparchus-optim/src/changes/changes.xml b/hipparchus-optim/src/changes/changes.xml
index d86e43c451..8e791322c4 100644
--- a/hipparchus-optim/src/changes/changes.xml
+++ b/hipparchus-optim/src/changes/changes.xml
@@ -49,7 +49,8 @@ If the output is not quite correct, check for invisible trailing spaces!
Hipparchus Optim Release Notes
-
+
Add Optimum.of(...).
diff --git a/hipparchus-samples/src/changes/changes.xml b/hipparchus-samples/src/changes/changes.xml
index 18a0d979bb..4662bf813e 100644
--- a/hipparchus-samples/src/changes/changes.xml
+++ b/hipparchus-samples/src/changes/changes.xml
@@ -49,6 +49,12 @@ If the output is not quite correct, check for invisible trailing spaces!
Hipparchus Samples Release Notes
+
+
+ No changes directly in this module. However, lower level Hipparchus modules did change,
+ hence a new release was needed.
+
+
No changes directly in this module. However, lower level Hipparchus modules did change,
diff --git a/hipparchus-stat/src/changes/changes.xml b/hipparchus-stat/src/changes/changes.xml
index 9195d6cddd..f2e834b612 100644
--- a/hipparchus-stat/src/changes/changes.xml
+++ b/hipparchus-stat/src/changes/changes.xml
@@ -49,6 +49,12 @@ If the output is not quite correct, check for invisible trailing spaces!
Hipparchus Core Release Notes
+
+
+ No changes directly in this module. However, lower level Hipparchus modules did change,
+ hence a new release was needed.
+
+
No changes directly in this module. However, lower level Hipparchus modules did change,
diff --git a/src/changes/changes.xml b/src/changes/changes.xml
index 65f6b6fd4b..3720d6bd35 100644
--- a/src/changes/changes.xml
+++ b/src/changes/changes.xml
@@ -49,7 +49,15 @@ If the output is not quite correct, check for invisible trailing spaces!
Hipparchus Release Notes
-
+
+
+ Add Optimum.of(...).
+
+
+ Make AbstractEvaluation constructor public, fix javadoc.
+
Fixed missing safety check in multi-step integrators.
Github: fixes #62.