README and Release Notes for 3.8

Author: carlosame

README.md

@@ -69,7 +69,7 @@ and optional library packages are the following:
 ### Compile-time dependencies
 
 - The [css4j](https://github.com/css4j/css4j/releases) library (and its transitive
-  dependencies); version 3.7.2 or higher is recommended (compatibility with 4.0 or
+  dependencies); version 3.8.0 or higher is recommended (compatibility with 4.0 or
   higher is not guaranteed).
 
 - The [css4j-agent](https://github.com/css4j/css4j-agent/releases) library;

RELEASE_NOTES.md

@@ -1,13 +1,29 @@
-# css4j-dom4j version 3.7.1 Release Notes
+# css4j-dom4j version 3.8 Release Notes
 
-### March 1, 2022
+### August 21, 2022
 
 <br/>
 
 ## Release Highlights
 
-- Fix a bug in positional selector matching.
+### Use `<style>` elements from any namespace for computing styles
 
+In style computation, inline styles that were in a non-HTML namespace were not
+being used. This is what some browsers did in the past but that is no longer the
+case.
+
+Now it uses style elements having any namespace, which matches the current
+behaviour of web browsers and makes it easier to support inlined SVG.
+
+## Detail of changes
+
+- Use `<style>` elements from any namespace for computing styles.
+- Javadoc: add a module description.
+- Fix javadoc warning.
+- Gradle: upgrade wrapper to 7.5.1.
+- Upgrade `extra-java-module-info` plugin to 0.15.
+- Actions: switch from 'adopt' distribution to 'temurin', setup-java@v2 to 3.
+- Actions: upgrade actions/checkout to v3.
 
 ## Project Sites