First attempt
changes after review
Request completion callback functionality
Request completion callback functionality
Merge pull request #185 from rhart/master

Request completion callback functionality
Fix compile errors after merge.
Some work on the close event stuff.
Support for OPTIONS method.

Closes #187.
Rework the context internals so that a context can see what the next handlers are.
Make it possible to add to the registry for downstream handlers as well as nested via next(*) methods.

Closes #183.
Expose the request ByteBuf.
Add getContext() to Context, which makes some things simpler.
Add an example for file uploading.
Document how content types are detected for handlebars templates.

Closes #131.
Merge remote-tracking branch 'origin/master'
Adding basic metric support
Adding basic metric support
Adding basic metric support - fixing dependency issue
Changes after code review
Basic metric support