We will need to consider bar lines and line breaks

[GabbyHalpin]

bar lines = "---3" for single "---4" for double before and after
line brake is a 7

[GabbyHalpin]

Line breaks are taken care of, but it seems to miss the very first line break at the top of the MEI file.
We can look into that after we have fixed the issue, since these will be related.

[fujinaga]

You'll eventually have to worry about page breaks, i.e., when a chant is written over two pages.

[kemalkongar]

I'll keep the issue open but solution for when we have multiple pages merged into a single volpiano:

Make export volpiano conditional and pass k number of dictionaries (syl: notes) into it. Merge dictionaries first (multiple pages) and add the clef (1---) at the start.