fix: Add fallback to iso format for date validator

The auto-parsing in moment is deprecated.

src/rules/date.js

@@ -2,25 +2,28 @@ import { get } from 'lodash';
 import moment from 'moment';
 
 export default function date(field, value, options) {
-  if (!moment(value, get(options, 'format'), true).isValid()) {
+  const format = get(options, 'format', moment.ISO_8601);
+  if (!moment(value, format, true).isValid()) {
     return 'date.format';
   }
 
-  if (get(options, 'past') && moment(value).diff(moment(), 'days') >= 0) {
+  const parsedValue = moment(value, format, true);
+
+  if (get(options, 'past') && parsedValue.diff(moment(), 'days') >= 0) {
     return 'date.past';
   }
 
-  if (get(options, 'future') && moment(value).diff(moment(), 'days') <= 0) {
+  if (get(options, 'future') && parsedValue.diff(moment(), 'days') <= 0) {
     return 'date.future';
   }
 
   const minDate = get(options, 'min');
-  if (minDate && moment(minDate).diff(moment(value), 'days') > 0) {
+  if (minDate && moment(minDate, format).diff(parsedValue, 'days') > 0) {
     return 'date.min';
   }
 
   const maxDate = get(options, 'max');
-  if (maxDate && moment(maxDate).diff(moment(value), 'days') < 0) {
+  if (maxDate && moment(maxDate, format).diff(parsedValue, 'days') < 0) {
     return 'date.max';
   }