[Doc] Release notes.

Author: vyazelenko

CHANGELOG.adoc

@@ -2,6 +2,9 @@
 
 == 1.39.0 (unreleased)
 
+* **[Rust]** Inline generated header methods. (https://github.com/aeron-io/simple-binary-encoding/pull/1110[#1110])
+* **[Rust]** Add element descriptions to comments.
+* **[C#]** Seal `PrimitiveValue` and `PrimitiveType`, make `ThrowHelper` static. (https://github.com/aeron-io/simple-binary-encoding/pull/1109[#1109])
 * Upgrade to `Gradle` 9.5.1.
 * Upgrade to `JUnit` 6.1.0.
 * Upgrade to `Shadow` 9.4.2.
@@ -25,7 +28,6 @@
 * Upgrade to `CMake` 4.3.0.
 * Upgrade to `Shadow` 9.4.1.
 * Upgrade to `Gradle` 9.4.1.
-* Upgrade to `Shadow` 9.4.0.
 * Upgrade to `Mockito` 5.23.0.
 
 == 1.37.1 (2026-01-13)