Update Changelog

Signed-off-by: falkTX <falktx@falktx.com>

Author: falkTX

ChangeLog.rst

@@ -3,13 +3,14 @@ ChangeLog
 
 * 1.9.20 (2022-01-15)
 
-  * WIP
   * Add waf autooption ``--example-tools`` to allow optional build of
     executables, libraries and man pages provided by `jack-example-tools
     <https://github.com/jackaudio/jack-example-tools>`_ (the files are built by
     default). Building and installing the additional files can be disabled by
     using ``--example-tools=no`` or ``--no-example-tools``.
+  * Fix 32-bit support in ALSA driver
   * Fix incomplete ASIO support on Windows
+  * Fix metadata usage with multiple users
   * Fix netsource tool missing on Windows
   * Fix semaphore usage on macOS
   * Official FreeBSD support