Things to be done.

0. Fix the bugs (see BUGS-parport).

1. Proper documentation.

2. A better lp.c:

   a) ECP support would be nice.  This can only work if both the port and
      the printer support it.

   b) Handle status readback automatically.  IEEE1284 printers can post status
      bits when they have something to say.  We should read out and deal 
      with (maybe just log) whatever the printer wants to tell the world.

3. Support more hardware (eg m68k, Sun bpp).

4. A better PLIP (make use of bidirectional/ECP/EPP ports).