Make 'pxt testdir' a bit more friendly and hex generating
Make 'pxt testdir' a bit more friendly and hex generating

switch-education/pxt,switch-education/pxt,switchinnovations/pxt,switchinnovations/pxt,switch-education/pxt,switch-education/pxt,Microsoft/pxt,playi/pxt,playi/pxt,switch-education/pxt,Microsoft/pxt,Microsoft/pxt,switchinnovations/pxt,Microsoft/pxt,playi/pxt,playi/pxt,switchinnovations/pxt,Microsoft/pxt