Release 6.0.3

• Fixed performance issue with StackContextLogger calling toString() on objects before it has checked whether or not the message will actually be logged. In many cases, it wouldn't be, so the string concatenation involved was completely unnecessary.
• Fixed some delayed NPEs when other DynamicOps return null in unexpected places. JsonOps.getMap() for example returns a MapLike which explicitly checks for JsonNull and substitutes a real null value instead.