Autocomplete: support maxlength and minlength

packages/autocomplete/src/autocomplete.vue

@@ -92,6 +92,8 @@
       name: String,
       size: String,
       value: String,
+      maxlength: Number,
+      minlength: Number,
       autofocus: Boolean,
       fetchSuggestions: Function,
       triggerOnFocus: {