update download links

Author: stefan-zobel

docs/index.html

@@ -37,9 +37,9 @@ <h3 id="javadoc">Javadoc online</h3>
 <h3 id="files">Downloads</h3>
 
 <ul>
-  <li><a href="https://github.com/retrostreams/android-retrostreams/releases/download/1.6.2/android-retrostreams-1.6.2.jar">android-retrostreams-1.6.2.jar</a> - Java 8 Jar file (Bytecode version 52)</li>
-  <li><a href="https://github.com/retrostreams/android-retrostreams/releases/download/1.6.2/android-retrostreams-1.6.2-javadoc.jar">android-retrostreams-1.6.2-javadoc.jar</a> - Javadoc API documentation</li>
-  <li><a href="https://github.com/retrostreams/android-retrostreams/archive/1.6.2.zip">android-retrostreams-1.6.2-src.zip</a> - Java source code</li>
+  <li><a href="https://github.com/retrostreams/android-retrostreams/releases/download/1.6.3/android-retrostreams-1.6.3.jar">android-retrostreams-1.6.3.jar</a> - Java 8 Jar file (Bytecode version 52)</li>
+  <li><a href="https://github.com/retrostreams/android-retrostreams/releases/download/1.6.3/android-retrostreams-1.6.3-javadoc.jar">android-retrostreams-1.6.3-javadoc.jar</a> - Javadoc API documentation</li>
+  <li><a href="https://github.com/retrostreams/android-retrostreams/archive/1.6.3.zip">android-retrostreams-1.6.3-src.zip</a> - Java source code</li>
 </ul>