ANNOUNCE: xfce4-mixer 4.18.1 released

xfce4-mixer 4.18.1 is now available for download from
  
  https://archive.xfce.org/src/apps/xfce4-mixer/4.18/xfce4-mixer-4.18.1.tar.bz2
  https://archive.xfce.org/src/apps/xfce4-mixer/4.18/xfce4-mixer-4.18.1.tar.bz2?sha1
  https://archive.xfce.org/src/apps/xfce4-mixer/4.18/xfce4-mixer-4.18.1.tar.bz2?sha256


What is xfce4-mixer?
====================

The Mixer is a volume control application for the Xfce Desktop
Environment. It provides both a volume control plugin for the Xfce panel
and a standalone mixer application.

It currently supports alsa, pulseaudio, oss and sndio.

Website: 
  https://docs.xfce.org/apps/xfce4-mixer/start


Release notes for 4.18.1
========================
- panel-plugin: Fix blurry icons when UI scale > 1
- build: Bump GTK version and fix deprecation warnings
- build: Bump GTK version and remove dead code
- panel-plugin: Define glib_autoptr_clear_XfcePanelPlugin if needed
- mixer-window: Fix exit icon name
- mixer-container: Fix container type
- gst-mixer: Properly disconnect signal handlers
- mixer-track: Ensure max_volume > min_volume for GtkScale
- sndio: Remove useless G_SOURCE_FUNC casts
- libxfce4mixer: Use G_DECLARE_FINAL_TYPE and G_DECLARE_DERIVABLE_TYPE
- panel-plugin: Use G_DECLARE_FINAL_TYPE
- xfce4-mixer: Use G_DECLARE_FINAL_TYPE
- Update `.gitignore`
- build: Remove some duplicate statements
- build: Decrease make log level