Middleware that reloads modified namespaces on each request.

This middleware should be limited to use in development environments.


(wrap-reload handler)(wrap-reload handler options)
Reload namespaces of modified files before the request is passed to the
supplied handler.

Accepts the following options:

:dirs                   - A list of directories that contain the source files.
                          Defaults to ["src"].
:reload-compile-errors? - If true, keep attempting to reload namespaces
                          that have compile errors.  Defaults to true.