Validation Issue in Score File: BracketSpan

[martha-thomae]

Right now the <bracketSpan> element is giving validation issues because it is not a valid child of <section> and it is part of the CMN module.

[martha-thomae]

I expect this issue will be fixed once pull request #771 is accepted.

[martha-thomae]

This should be changed into the new way of showing ligatures in the score layout, which Laurent implemented recently in Verovio (see issue rism-digital/verovio#2081 and PR rism-digital/verovio#2278).

This would imply removing the call to PostProcess.replace_ligatures_by_brackets() which should happen somewhere in the scoring-up. And instead, use the --ligature-as-bracket option in Verovio.