Adding triangle note-heads.

Hello Noteflight Team,

   I use triangle-shaped note-heads (some pointing up, some down) in piano scores to distinguish particular categories of notes, and I would love to be able to reproduce this notation directly in Noteflight. (I see that MuseScore has this feature so I know it must be useful to others besides myself.)  Is support for triangle note-heads something that may be added in the future? 

Thank you so much.