move to io.measures package and don't shade
remove
do basic setup in joons sketch init, add panelYZ() for making panels in the YZ plane
when Runner is run directly, accept a sketch name on the cmd line
use user.dir as PASSAGE_HOME and PASSAGE_DATA when either are not set in the environment
build SphericalPoint from xyz
Merge pull request #5 from measures/user-dir

use user.dir as PASSAGE_HOME and PASSAGE_DATA when either are not set