Radium

A little bit early release this time since the fix for playing note when pressing computer keyboard and editing is enabled, was applied to the wrong function, causing silence when adding polyphonic notes, and double up when adding non-polyphonic notes.

Changes 5.9.43 -> 5.9.44:

• Editor: Add undo when selecting "Add automation to
  current editor track".
• Sequencer: Delete block when undoing "Replace With
  New Block".
• Sequencer: Less gradient background color.
• Modular mixer: Generate same color for all selected
  instruments when selecting "Generate new color".
• Linux: Don't show warning about MESA when using
  an AMD GFX card.
• Init: Initialize OpenGL much earlier in the
  startup. Could reduce the chance of crashing
  OpenGL during startup.
• Editor: Fix not playing notes twice when adding a
  note and "Play notes under the cursor when moving
  up or down" is enabled". This supposedly fixed in
  5.9.42, but wasn't.
• Editor: Turn off autorepeat when pressing left
  shift while adding notes and "Enable keyboard
  autorepeat when adding notes in the editor" is
  disabled.
• Instruments: Update slider text immediately when
  changing "Change value when pressing "random".
• Editor: Ensure cursor is visible when moving the
  horizontal scroll bar.

Changes 5.9.42 -> 5.9.43:

• Editor: Don't crash when changing on/off for a
  non-existent track.