Tagged trees with todo/done to get this thing finished
Finished first draft of name stripper.  It should work, and I've
tested the internal methods in an interactive session.

Removed list2dict as it was unnecessary.
Compiling.  Fixed a few minor type-related bugs and a few typos.
The skeleton is working!  The network is represented 'correctly' in
memory.  Neither aliases not anaphora are resolved.  File output not
implemented.  Need to add 'Entity' class for aliases.
Added entity class.