Update changelog

CHANGELOG.md

@@ -1,5 +1,14 @@
 # Changelog
 
+## 0.6.0 (unreleased)
+
+- Enable the creation of asymmetric diverging palettes (e.g. 3 colors for the left side and 4 colors for the right side), either
+  balanced (i.e. the perceptual distance between the colors is the same on both sides) or not. This is useful for creating
+  some choropleth maps and fixes #3. See the new `getAsymmetricDivergingColors` function.
+
+- Enable the creation of interpolated sequential palettes with a custom number of colors (i.e. if a scheme exists only in
+  palette with 3-to-9 colors, it is now possible to create a palette with 12 colors). See the new `getSequentialColors` function.
+
 ## 0.5.0 (2023-09-20)
 
 - Export missing types and enums (`Palette`, `Provider`, `Type`).