Comments updated in Markers.js (tiny changes)
Revised RunningMarker.setTimeObjects(...)

The new function does the same thing with less
work. Should be faster.
Bug Fix: Starting after the beginning of a score...

This now works correctly. A fix deep in MidiRest.js.
Rests straddling the start marker are now adjusted
correctly.
Completed bug fixes around the start marker.

Have extensively tested starting with the start
marker at various positions in all three scores,
and there now no known problems.
Basically, the MidiChords and MidiRests to be
played when the Go button is clicked were not
being being set correctly.
This code must have been left unfinished before
the summer break!!