Update documentation and configurations for version 3.8

Bump version references from 3.4 to 3.8 across Antora configs, Maven dependencies, and documentation files.

README.adoc

@@ -9,11 +9,11 @@ The project to store, edit, and generate the documentation of http://jmonkeyengi
 The documentation `docs/modules/ROOT/pages` is editable :
 
 * Online via github (Edit link located on the top navbar of the Wiki + Pull Request)
-* Offline with the Atom editor, which includes a built in previewer and code editor. see link:https://wiki.jmonkeyengine.org/docs-wiki/3.4/atom_editor.html[Atom Editor for Wiki Editing]
+* Offline with the Atom editor, which includes a built in previewer and code editor. see link:https://wiki.jmonkeyengine.org/docs-wiki/3.8/atom_editor.html[Atom Editor for Wiki Editing]
 * Any text editor and browser program of your choice.
 * Setting up your own local Node.js environment.
 
-NOTE: Read the link:https://wiki.jmonkeyengine.org/docs-wiki/3.4/wiki_contributor.html[Wiki Contributions] document for details on how to contribute.
+NOTE: Read the link:https://wiki.jmonkeyengine.org/docs-wiki/3.8/wiki_contributor.html[Wiki Contributions] document for details on how to contribute.
 
 == Build & Preview
 

docs-wiki/antora.yml

@@ -1,6 +1,6 @@
 name: docs-wiki
 title: Wiki Contribution
-version: '3.4'
+version: '3.8'
 start_page: ROOT:wiki_contributor.adoc
 nav:
 - modules/ROOT/nav.adoc

docs-wiki/modules/ROOT/pages/wiki_admin.adoc

@@ -140,7 +140,7 @@ When it's time to cut a new version for the wiki, the process is as follows.
 content:
   sources:
   - url: https://github.com/jMonkeyEngine/wiki.git
-    branches: [HEAD, v3.3, v3.2]
+    branches: [HEAD, v3.4, v3.3, v3.2]
 ```
 .. Increment the version of the `antora.yml` file.
 +

docs/antora.yml

@@ -1,6 +1,6 @@
 name: docs
 title: JME
-version: '3.4'
+version: '3.8'
 start_page: ROOT:documentation.adoc
 nav:
 - modules/ROOT/nav.adoc

docs/modules/ROOT/pages/getting-started/maven.adoc

@@ -51,7 +51,7 @@ repositories {
     mavenCentral()
 }
 
-def jme3 = [v:'3.4.0-stable', g:'org.jmonkeyengine']
+def jme3 = [v:'3.8.0-stable', g:'org.jmonkeyengine']
 dependencies {
     implementation "${jme3.g}:jme3-core:${jme3.v}"
     runtimeOnly "${jme3.g}:jme3-desktop:${jme3.v}"
@@ -65,7 +65,7 @@ dependencies {
 ----
   <properties>
     <jme3_g>org.jmonkeyengine</jme3_g>
-    <jme3_v>3.4.0-stable</jme3_v>
+    <jme3_v>3.8.0-stable</jme3_v>
   </properties>
 
   <repositories>

wiki-playbook.yml

@@ -6,7 +6,7 @@ site:
 content:
   sources:
   - url: https://github.com/jMonkeyEngine/wiki.git
-    branches: [HEAD, v3.3, v3.2]
+    branches: [HEAD, v3.4, v3.3, v3.2]
     start_path: docs
   - url: https://github.com/jMonkeyEngine/wiki-ui
     branches: HEAD