Gateway: use lib/type.js leaf types.
Update map from MIME to drivers to have direct types.
Gateway: search is case-insensitive.
Gateway: cleaner score data type.
Gateway: search ending in / shows exact folder contents.
Gateway: (trivial) omit needless log.
Gateway: search doesn't interpret . as a regexp char
Sequence diagram: make the demo use the plug.
Gateway: Perf improvement in search.

In Chrome, the performance is 150x better.