Candidates for packages

[noteflakes]

• scholarly
• lalily
• live-score
• auto-transpose
• page-layout (depends on edition-engraver)
• breaks (depends on oll-core)
• oll-core - keep only the nested options tree for a start
• curves

Done:

• lyp-roman-numerals
• lily-fonts - bravura and lilyjazz
• edition-engraver
• merge-rests-engraver