Add NullLogger.

For when you need a Logger but don't want one. ;)

logging/types.go

@@ -2,7 +2,7 @@ package logging
 
 import (
 	"log"
-	`os`
+	"os"
 )
 
 /*
@@ -86,6 +86,9 @@ type FileLogger struct {
 	writer *os.File
 }
 
+// NullLogger is used mainly for test implementations, mockup code, etc. It does absolutely nothing with all messages sent to it.
+type NullLogger struct{}
+
 // MultiLogger is used to contain one or more Loggers and present them all as a single Logger.
 type MultiLogger struct {
 	/*