Google Code-in

A number of small changes have been made that make the artwotrk in guide somewhat out of date:

(1) some block names have changed (e.g. transpose is now semi-tone transpose)

(2) some default args have changed, e.g. the transpose block has by default the math for octave transposition

(3) the colors of some blocks have change, e.g., setkey

The export block artwork button on the save panel should make it relatively easy to regenerate the artwork.