Now support 'relation->field' syntax to index fields from relations (has_one, has_many, many_many and belongs_to) + rename wysiwyg_name in wysiwygs->name

Be careful with relations: the item's indexed words won't be updated if the linked model is updated. You have to do it manually.
Add SEO fields for pages
Add methode force_reindex() on observed model to force its indexation

You can now call $item->force_reindex() instead of $item->save() if you just want to index it.
Use same static function split_string() to index or search