Add release notes.

Signed-off-by: Franz Wilhelmstötter <franz.wilhelmstoetter@gmail.com>

Author: jenetics

README.md

@@ -330,7 +330,7 @@ The library is licensed under the [Apache License, Version 2.0](http://www.apach
 
 ## Release notes
 
-### 3.2.1
+### [3.2.1](https://github.com/jenetics/jpx/releases/tag/v3.2.1)
 
 #### Improvements
 

RELEASE_NOTES.md

@@ -1,5 +1,11 @@
 ## Release notes
 
+### [3.2.1](https://github.com/jenetics/jpx/releases/tag/v3.2.1)
+
+#### Improvements
+
+* [#186](https://github.com/jenetics/jpx/issues/186): LENIENT mode allows GPX tags without creator attributes.
+
 ### [3.2.0](https://github.com/jenetics/jpx/releases/tag/v3.2.0)
 
 #### Improvements