- 0.0.0.0 / IPv6.

- Speed tweaking.

- Waitress version number in header.

- Test paste server runner on windows.

- Anticipate multivalue and single-value-only headers in request headers in
  parser.py.

- Timeout functests.

- Complex pipelining functests (with intermediate connection: close).

- Get rid of overflowable inbuf.

- Killthreads support.

