Few small cleanup items

Author: rtconner

config/tagging.php

@@ -18,7 +18,7 @@
 	'untag_on_delete' => true,
 
 	// Auto-delete unused tags from the 'tags' database table (when they are used zero times)
-	'delete_unused_tags' => true,
+	'delete_unused_tags' => false,
 
 	// Model to use to store the tags in the database
 	'tag_model'=>'\Conner\Tagging\Model\Tag',

migrations/2016_06_29_073615_update_tags_table.php

@@ -17,6 +17,7 @@ public function up()
 
 	public function down()
 	{
+        Schema::disableForeignKeyConstraints();
 		Schema::table('tagging_tags', function ($table) {
 			$table->dropForeign('tagging_tags_tag_group_id_foreign');
 			$table->dropColumn('tag_group_id');

src/Taggable.php

@@ -376,7 +376,7 @@ public static function untagOnDelete()
      */
     public static function shouldDeleteUnused(): bool
     {
-        return config('tagging.delete_unused_tags', true);
+        return config('tagging.delete_unused_tags', false);
     }
 
     /**