Merge pull request #233 from esymeptoo/master

perf: watch required in form-item when required changes #234

src/components/form/form-item.vue

@@ -96,8 +96,14 @@
             },
             rules (){
                 this.setRules();
+            },
+            required (n, o) {
+                this.isRequired = n;
+                if (o && !n) {
+                    this.resetField();
                 }
             },
+        },
         inject: ['FormInstance'],
         computed: {
             classes () {