Updated TODO.
Built Red Example Score instrumentation material package.

You can do this:

    * enter a score
    * create a material package
    * configure the material package for autoediting
    * autoedit a PerformerInventory

This persists a perfect instrumentation object to the score in question.

MODEL: this means that it will be possible to eliminate the special (instr)
command that allows ScorePackageManager to manager an elected instrumentation
module by hand. No special handling is needed.