utt

Copperbox revision 1293.

I've started a new project for UTT - uniform triadic transformations - as they don't look like a good fit for bala-core.

Actually, I'm suspecting that bala-core won't live up to its plan as being a general set of data types and operations for pitch, intervals, meter patterns etc. Formalisms like UTT demand their own representations so having some common 'core' data types hopefully shared between formalisms isn't satisfactory.