add additional optional argument for annotate, crit.remark, etc.

[jefferyshivers]

When item is a symbol list, we can't apply music functions such as parenthesize without pointing scholarLY to the music that succeeds it. We need a way to do that.

This doesn't affect altered slur commands (like slurDashed, etc.) because they aren't truly music functions themselves. It will be useful to research what type of editorial commands fall under the music-function category, and which ones don't. To that end, it would help to know what might generally be included in that list. (bringing that up now in that issue thread)

[jefferyshivers]

This can't be avoided, so the change is added as of b06e13c.