remove artisan change.

fix bug in eloquent model and update version.

Merge branch 'staging'

Merge branch 'develop' into staging

Merge branch 'staging'

fix tests.

revert eloquent back to 3.2.3

Merge branch 'develop' of github.com:laravel/laravel into develop

Merge branch 'master' of github.com:laravel/laravel

update change log.