Create Counterclockwise project.
Create cljm.notation package. New Clearley based staff2.
Define recursive term-seq and a staff-parser.
Allow strings or symbols in staff expressions for more degrees of flexibility.
Read-phrase and read-score mutually recursive helper functions.
Revising phrase and score.  Adding defnotation in cljm.notation.core.
Replace the old staff notation with staff2.  Update cljm.music.clementine to match.