Merge pull request #317 from sethp-jive/master

Fixing {Object,Array}Deserializer's illegal nullValue
Added release notes, credits wrt #317
Test for value update on "creator" props
Start work on adding context(-accessible) attributes; general-purpose key/value context
work bit more on context attributes
Completed serialization-side test, seems to work.
Implemented #319
Add bit more checking in new attribute tests
Merge pull request #318 from christophercurrie/valueUpdate

Can't deserialize to a bean that has Creator props
Refactoring; FailingDeserializer was in the wrong place for some reason
...
Fix #324 in mainline
Start working on #315, (more) configurable null serialization
First part of custom null serializers implemented (per-property)
Implement #315
minor test refactoring for better grouping
some more unit test refactoring
Trying to refactor things to make it possible to filter non-Bean types (maps; any setters)
More documentation cleanup
Completed initial set of refactoring to be able to solve #307 and perhaps #317