Formatting tidy, per feedback.
Feedback incorporated: split setter/attributes, more tests, inner bean constructor, logging changes.

Overloaded setter methods with different parameter types are now named separately, the endpoint attributes reflect this and tests are added to reflect this.

An inner bean can be supplied to provide an alternative MBeanObjectConverter.

Log a warning instead of a more destructive UnsupportedOperationException where there's incomplete parsing in the DefaultMBeanObjectConverter and add a trace level for exception debugging.
Minor test change and doc/reference update