Update che changelog.

CHANGELOG.md

@@ -4,6 +4,20 @@ documented here.
 
 This project adheres to [Semantic Versioning](https://semver.org/).
 
+## [0.23.0] - WIP
+
+### Added
+ * The `.inverse_transform_unit_vector(v)` was added to `Rotation2/3`, `Isometry2/3`, `UnitQuaternion`, and `UnitComplex`.
+   It applies the corresponding rotation to a unit vector `Unit<Vector2/3>`.
+ * The `Point.map(f)` and `Point.apply(f)` to apply a function to each component of the point, similarly to `Vector.map(f)`
+   and `Vector.apply(f)`.
+ * The `Quaternion::from([N; 4])` conversion to build a quaternion from an array of four elements.
+ * The `Isometry::from(Translation)` conversion to build an isometry from a translation.
+ * The `Vector::ith_axis(i)` which build a unit vector, e.g., `Unit<Vector3<f32>>` with its i-th component set to 1.0 and the
+   others set to zero.
+ * The `Isometry.lerp_slerp` and `Isometry.try_lerp_slerp` methods to interpolate between two isometries using linear
+   interpolation for the translational part, and spherical interpolation for the rotational part.
+   
 ## [0.22.0]
 In this release, we are using the new version 0.2 of simba. One major change of that version is that the
 use of `libm` is now opt-in when building targetting `no-std` environment. If you are using floating-point