chore: Changelog for 0.3.0

Signed-off-by: azerr <[email protected]>

src/main/resources/META-INF/plugin.xml

@@ -5,6 +5,15 @@
     <vendor email="[email protected]" url="https://github.com/redhat-developer/lsp4ij/issues">Red-Hat</vendor>
 
     <change-notes><![CDATA[
+    <h3>0.3.0</h3>
+    <ul>
+      <li>Support for textDocument/semanticTokens</li>
+      <li>Support file link in hover</li>
+      <li>Improve performance</li>
+      <li>Fixing bugs</li>
+    </ul>
+    Learn more in the <a href="https://github.com/redhat-developer/lsp4ij/milestone/3?closed=1">changelog</a>.
+
     <h3>0.0.2</h3>
     <ul>
       <li>Provide an API to enable/disable & start/stop language server</li>