Neume

Copperbox revision 1220.

Finally, a successful implementation that provides both overlays and score syntax (i.e straight sections, repeats and repeats with alternative endings). Currently ABC only and only overlays of size two.

I'm going to use an arity family of functions vis-a-vis zip2, zip3 etc. Trying something like a typed printf is too complicated given that I have to send quite a few parameters to the rendering function and the 'variable arity' represents the size of paired tuples within a functorial datatype.