Volume Icon authors/contributors:

Maato <maato@softwarebakery.com>
 - Developer

Niklas Koep <niklas.koep@gmail.com>
 - Lots of fixes, and help on github.
 
David Gidwani <david.gidwani@gmail.com>
 - Hotkey support
 
Mihail Szabolcs
 - Notifications

Matthias Frei
 - Show notification only when hotkeys are pressed or when scrolling the icon.
 - Make the volume slider popup downwards if no space is left above the icon.

Jean-Pierre Demailly <demailly@fourier.ujf-grenoble.fr>
 - Option to use a horizontal slider
 - Option to show the numerical value of the sound level on the slider

Matt Boyer
 - Added support for 8-bit OSS sliders and improved configure.ac for OSS

Gauvain Pocentek
 - Port to GTK 3
 - Added french translation.

Revellian
 - Changed volume mapping to match that of alsamixer (code from alsamixer).

Dan Church
 - Added `--with-default-mixerapp' configur option.

Valère Monseur
 - Added option for transparent slider background.
 - Various small fixes.

Steven Honeyman
 - Only use gtk -panel icons if they exist.

Mateusz Łukasik <mati75@linuxmint.pl>
 - Polish translation
