func NewLogger() *Logger {
	return &Logger{
		StackSize: 1024 * 8,
	}
}
NewRecovery returns a new instance of Recovery
package request
import (
	"net/http"
	"runtime"
	"time"
	"github.com/codegangsta/negroni"
	"github.com/jfbus/impressionist/log"
)
type Logger struct {
	StackSize int
}