no-op - whitespace
Better log handling. ...

We now might log to a log file, if it is specified.

Also, we allow only some fields to be specified in the logging
config, and the remaining fields get their default value.
Export `requiredParam`, `badRequest`, and `writeJSON`. ...

... because I've found they are useful.
minor version
Merge pull request #3 from taphu/more-pr

Moonshine improvements.