Seeking with the progress indicator can be erratic

[p-himik]

There are two issues with it:

• There's no dragging which is usually expected by end users, and seems like it used to be there in v5 as implemented by #184
• Clicking to seek works nicely only for long scores. If there are just a few notes, some clicks won't do anything and some will move the indicator at a different position

[paulrosen]

I'll put this on my bug list.

The first issue is probably a bug.

The second issue I can explain but it could still be implemented better - if there is no event where you click then it moves to the nearest event. However, since I implemented that I have implemented allowing events on subbeats, so I can probably get it much smoother.