Implement ArrayAccess in DomainObject
Use __set and __get instead of internal methods
Merge branch 'array-access-support' of git://github.com/arthens/pheasant into array-access-support

* 'array-access-support' of git://github.com/arthens/pheasant:
  Use __set and __get instead of internal methods
  Implement ArrayAccess in DomainObject

Conflicts:
	tests/Pheasant/Tests/DomainObjectTest.php