- its probably worthwhile to make the primary listen() interface humane, i.e.:

- its probably worthwhile to make the primary listen() interface humane, i.e.:
 def listen(target, args)

so here we provide a "wrapper" approach that allows this, and it is
basically pass-by-value.  a pass-by-value event *may* support rewriting
some of the args in the dictionary.

 the current
listen will become "listen_raw" since it saves about 100% overhead versus
the coercion to dict, and will be used internally, and will remain
pass-by-reference.

proxyconnection probably will rely upon the newer style of pass-by-value
for "rewrite the args" types of calls.