[Denemo-devel] Keeping the cursor position and zoom state of scores.

[Richard Shann]

I have checked in code that means a score now maintains the cursor
position across navigation thru movements and across Denemo sessions.
This means you can take up where you left off, without having to find
the location again, and without having to re-set your favorite zoom
state, or the number of systems that you wish to see for a given
movement.

This is involved tinkering with fragile old code - please be alert for
problems of Denemo not knowing which clef, keysig or timesig or what the
stem direction is, and report and (if possible) characterise them.

Mouse positioning on the extra systems (lines) is still ongoing - no
need to report on that.

Richard