LigatureEvent

Start or end a ligature.

Event classes: ligature-event, span-event, music-event and StreamEvent

Accepted by: Ligature_bracket_engraver, Mensural_ligature_engraver and Vaticana_ligature_engraver

Properties:

name (symbol):

'LigatureEvent

Name of this music object

span-type (string):

'ligature

What kind of spanner should be created?

TODO: consider making type into symbol

types (list):

'(general-music span-event ligature-event event)

The types of this music object; determines by what engraver this music expression is processed.