| ⇢ | A | WithSurveyModel added |
| ⇢ | A | DActiveRecord::hasMany() added | |
| ⇢ | A | WithSurveyModel::rules() added | |
| ⇢ | A | BaseAnswer::rules() added | |
| ⇢ | A | DActiveRecord::hasOne() added | |
| ⇢ | A | WithSurveyModel::getSurvey() added | |
| ⇢ | A | BaseAnswer::getQuestion() added | |
| ⇢ | A | BaseQuestion::getAnswers() added | |
| ⇢ | A | BaseSurvey::getQuestion() added | |
| ⇢ | A | DActiveRecord::primaryKey() added |