Log Message:
Changes 0.26:
* Gtk+ 3.x fixes.

Changes 0.25:
* Optionally build with Gtk+ 3.x in addition to Gtk+ 2.x.

Changes 0.24:
* GTK code is now fine with GSEAL. Minor fixes in the PulseAudio backend,
  other fixes.

Changes 0.23:
* various minor fixes in the pulse and gstreamer backends as well in the Vala
  API. Support for the recently standardized Vorbis 6.1/7.1 multichannel modes.