4 First production version, somewhat rushed by the sudden death of cia.vc.
7 Add a delay to avoid threads spinning on the empty-queue-check, eating CPU.
8 Fix a bug in reporting of multi-file commits.
11 All segments of a message with embedded newlines are now transmitted.
12 Message reduction - irkerhook driops the filelist on execessively long ones.
13 Shell quote hardening in irkerhook.py.