feat: Vue 3 Support (#1344)

BREAKING CHANGE: drop vue 2 support

docs/.vuepress/components/Paginated.vue

@@ -1,5 +1,9 @@
 <template>
-  <v-select :options="paginated" :filterable="false" @search="onSearch">
+  <v-select
+    :options="paginated"
+    :filterable="false"
+    @search="(query) => (search = query)"
+  >
     <li slot="list-footer" class="pagination">
       <button :disabled="!hasPrevPage" @click="offset -= limit">Prev</button>
       <button :disabled="!hasNextPage" @click="offset += limit">Next</button>

docs/.vuepress/components/Sandbox.vue

@@ -188,11 +188,11 @@
             v-bind="configuration"
             placeholder="country objects, using option scoped slots"
           >
-            <template slot="selected-option" slot-scope="option">
-              {{ option.label }} -- {{ option.value }}
+            <template slot="selected-option" slot-scope="{ label, value }">
+              {{ label }} -- {{ value }}
             </template>
-            <template slot="option" slot-scope="option">
-              {{ option.label }} ({{ option.value }})
+            <template slot="option" slot-scope="{ label, value }">
+              {{ label }} ({{ value }})
             </template>
           </v-select>
         </div>