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- The START/STOP/RESET buttons now have icons, rather than text labels (which
were difficult to see). Also added tooltips to the buttons
- Added new buttons to advance/regress the timer by 10 or 60 seconds
- Programmes can no longer be edited while they are running
- The edit window has a new button for testing sound effects
- When a line in the edit window is updated, the scrollbar no longer moves (and
the line remains selected)