V6.5.0

#619 Object not injected when getter is Optional

Beware there was some api change in the PropertyFinder object, you would only care if you implement your own mapper. Hence made the executive choice not to make it a major, as I guess nobody is doing that.

When looking in sub properties, we did not filter out parents with no injection or getters, leading to the property being linked to a NullSetter parent.