Unit tests: Allow starting from an arbitrary file.
Unit tests: fixed wrong indentation.
Unit tests: remember whether the debuggee is running or not.
Store the previous ballot value on catchup.
Unit tests: Close and detach the per-test logfiles after running that test.
Unit tests: Put a textual description what is being tested into the logfile.
Fix syntax of unit-tests/002_bad_packets.txt.
Fix comment/description of unit-tests/003_pacemaker.txt.