More than just 12-TET and 24-TET

Traditional western music uses 12-TET, or 12 Tone Equal Temperament, where every octave is divided into 12 equal tones. Other music around the world, however, use other numbered TET systems and some don't even equally divide music into octaves. I feel this would be a great addition as no other music editor really supports this feature without modifications and it would expand greatly the different types of music found in Noteflight.

You can use quarter-tones in Noteflight, but it is very limited. I think it would be good to add actual symbols for quarter-tones as well as other tone systems.