[cli-harness] raising error when release dir is bogus
[cli-harness] check for empty test suite
[cli-harness] hint for test names
[cli-harness] warning if tests dir missing
[cli-clean] cleaning quietly. No reason compile should be loud and the others quiet.
[cli-harness] big separator after init phase
[cli-harness] removing test files from student dir
[cli-harness] footer in markdown file
[cli-harness] printing titles in the sheet
[cli-harness] some notes for the future