* master: (59 commits)
  Refactored hasMany and hasOne so that they support cross-DBMS relationship.
  removed unused asset.php files
  fixed composer.json autoload pathes
  fixed c&p error
  allow installing yii2-dev and get the Yii.php file in the same place
  updated dev composer.json dependencies
  added composer.json for yii2-dev package
  fixed broken UniqueValidator
  removed call to nonexistsend property
  cleanup redis AR
  refactored Model and redis AR to allow drop of RecordSchema
  refactored redis AR to relect the latest changes
  "yii\swiftmailer\Mailer::createSwiftObject()" simplified.
  fixed empty result in findByPk list
  fixed problem with not closed transaction in deleteAll()
  fixed broken test
  apply changes to db\AR -> redis\AR
  added dependency in db\AR -> redis\AR needs to be refactored later
  redis AR cleanup
  ensure atomicity of operations
  ...

Conflicts:
	tests/unit/data/config.php