debug mode for parameter and parsing

[karenetheridge]

it's not always obvious how a parameter will parse using style and explode. Add an option (environment variable maybe?) that will print the parsed version of the parameter to STDERR.

[karenetheridge]

also.. not obvious how an encoded body will parse, given media-type deserialization and also multipart parsing.

[karenetheridge]

provide a filehandle attribute on the OM object, defaulting to *STDERR, which is printed any time a non-obvious piece of data (or maybe all chunks of data?) is sent for validation. e.g.:

# validating header Foo-Bar as: {"a": 1, "b", 2}
# validating query parameter blah as: 1
# validating body content as: [...]