Added tests for ArrayField.has_changed().
Added tests for ArrayField.has_changed().

solarissmoke/django,pauloxnet/django,apollo13/django,googleinterns/django,frankvdp/django,MarkusH/django,apollo13/django,solarissmoke/django,charettes/django,blighj/django,monetate/django,atul-bhouraskar/django,rsalmaso/django,simonw/django,pauloxnet/django,theo-l/django,monetate/django,frankvdp/django,timgraham/django,felixxm/django,blighj/django,takis/django,wkschwartz/django,fenginx/django,googleinterns/django,rsalmaso/django,fenginx/django,koordinates/django,manhhomienbienthuy/django,claudep/django,theo-l/django,schinckel/django,georgemarshall/django,dsanders11/django,timgraham/django,googleinterns/django,schinckel/django,auvipy/django,kaedroho/django,claudep/django,elena/django,MarkusH/django,pauloxnet/django,freakboy3742/django,fenginx/django,elena/django,dsanders11/django,django/django,django/django,frankvdp/django,shaib/django,takis/django,ghickman/django,shaib/django,adamchainz/django,freakboy3742/django,atul-bhouraskar/django,georgemarshall/django,atul-bhouraskar/django,apollo13/django,schinckel/django,timgraham/django,koordinates/django,elena/django,manhhomienbienthuy/django,wkschwartz/django,EmadMokhtar/Django,theo-l/django,auvipy/django,dsanders11/django,frankvdp/django,solarissmoke/django,timgraham/django,wkschwartz/django,theo-l/django,simonw/django,django/django,felixxm/django,shaib/django,takis/django,kaedroho/django,EmadMokhtar/Django,kaedroho/django,claudep/django,charettes/django,adamchainz/django,freakboy3742/django,auvipy/django,claudep/django,auvipy/django,takis/django,shaib/django,pauloxnet/django,felixxm/django,monetate/django,adamchainz/django,koordinates/django,simonw/django,MarkusH/django,apollo13/django,koordinates/django,adamchainz/django,django/django,charettes/django,googleinterns/django,blighj/django,rsalmaso/django,EmadMokhtar/Django,monetate/django,atul-bhouraskar/django,ghickman/django,felixxm/django,blighj/django,manhhomienbienthuy/django,manhhomienbienthuy/django,charettes/django,MarkusH/django,georgemarshall/django,elena/django,solarissmoke/django,georgemarshall/django,rsalmaso/django,fenginx/django,wkschwartz/django,dsanders11/django,schinckel/django,ghickman/django,simonw/django,ghickman/django