updated upload field

Author: matt-sanders

dist/vue-formly-bootstrap.js

@@ -1,5 +1,5 @@
 /**
- * vue-formly-bootstrap v1.0.3
+ * vue-formly-bootstrap v1.0.4
  * https://github.com/matt-sanders/vue-formly-bootstrap
  * Released under the MIT License.
  */
@@ -690,7 +690,9 @@ return /******/ (function(modules) { // webpackBootstrap
 	    mixins: [_baseField2.default],
 	    methods: {
 	        onChange: function onChange(e) {
-	            if (this.form[key].inputType == 'file') {
+	            this.$set('form.' + this.key + '.$dirty', true);
+	            this.runFunction('onChange', e);
+	            if (this.form[this.key].inputType == 'file') {
 	                this.$set('form.' + this.key + '.files', this.$el.querySelector('input').files);
 	            }
 	        }