message: Fix for - Checkbox select / unselect bug in VUE
diff: @Component
  export default class Checkbox extends Question<QuestionCheckboxModel> {
  + innerValue = null;
  get value() {
  - return !this.question.isEmpty() ? this.question.value : [];
  + if(this.innerValue === null) {
  + this.innerValue = !this.question.isEmpty() ? this.question.value : [];
  + }
  + return this.innerValue;
  }
  set value(newVal) {
  this.question.value = newVal;
  + this.innerValue = newVal;
  }
  get colWidth() {
  var colCount = this.question.colCount;
  