New note head

Hello,

Just one improvement today if it seems usefull for you.

I'm writting a tablature for Tin Whistle and i would like to have 3 special heads of note to represent the flute holes like in the picture enclosed : one true circle black / one true circle white / one true circle black/white.

This could allow to do scores like in the enclosed example.
For the moment I use the current heads of note.
It's not too bad but the result can be better.

Edit: Maybe it's a bad idea to proceed like that. You can delete this message if you think like it.

Regards.