Add Context.require() helpers.  Add logging to context mutators.
Add helpers to use RegexMatcher.
Add /content/ route to simple for further testing.
For now set() won't take null, use remove() instead.
Expose MatchResult not Matcher.
Expose MatchResult not Matcher.
Add StreamPayload to get response content moving.
Hookup payload handling on HTTP response sending.
Added helpers for Status.success|failure.
Hooked up standard response headers.
Added respoinse trace logging.