Recursivity

toArray() on objects now recursively converts objects to arrays.

Various bug fixes

Various bug fixes:

• Relationship callback only called if identifier is valid #10
• Fix bug in abstract decoder throwing error if JSON is invalid
• Bugs in working out status code in error collection #11
• Bug in required relationship message detail #12

Release with neomerx/json-api 0.6

This release is dependent on neomerx/json-api ^0.6

Second development release

Various improvements and changes to improve interfaces.

First release

The initial release.