always send response even if error already logged

fix res.send res.jsonp mix up

add JsonP logging support + change to opts obj init

update package.json deps

update dependencies

add check before emitting serious error evt

change evt emitted when encounter serious error to more semantic name

emit app event on serious errors

prevent duplicate logging of the same error

change default error level to 'error' so that uncaught exception erro…

…rs will be logged in production