add .sync support for Dialog and Pagination

packages/dialog/src/component.vue

@@ -84,18 +84,10 @@
       },
       beforeClose: Function
     },
-    data() {
-      return {
-        visible: false
-      };
-    },
 
     watch: {
-      value(val) {
-        this.visible = val;
-      },
       visible(val) {
-        this.$emit('input', val);
+        this.$emit('update:visible', val);
         if (val) {
           this.$emit('open');
           this.$el.addEventListener('scroll', this.updatePopper);
@@ -137,7 +129,7 @@
     },
 
     mounted() {
-      if (this.value) {
+      if (this.visible) {
         this.rendered = true;
         this.open();
       }