Radium 5.9.22 released

[kjetil]

Changes 5.9.21 -> 5.9.22:

• GUI: Replace all Qt scroll bars with Radium scroll
  bars.
• GUI: Fix scrollbar positions not being updated when
  using mouse wheel inside a scroll area.
• GUI: Fix mouse wheel for scrolling the mixer area.
  If mouse pointer was on top of a slider, the slider
  value would change value instead, and other similar
  things, which was quite confusing.
• Sequencer: Don't show the resampler seqblock
  interface popup menu for editor seqblocks.
• Sequencer: Add "Recording options" entry to the
  audio seqtrack section
• General: Reduce gc pause times.
• API:
  • New function: gui_addMouseWheelCallback
  • Add optional argument "listen_to_mouse_wheel"
    to gui_scrollArea, gui_verticalScroll, and
    gui_horizontalScroll.