Improve info messaging on global setting modification
remove unnecessary sleep
move all doc metadata declarations after function
Allow users to control note parameters with note keywords such as :E4

    control n, note: :E4
inform user when run has completed
improve output message spacing
Add new fn - stop to kill running synth nodes.
Don't print finished run as message can be received before other messages from same job.
use the term sound rather than node
extract out DEFAULT_PLAY_OPTS and other minor doc improvements
Further docstring work
Remove repeat fn - prefer loop
add more docs. One day I'll get there...