### 2.9.1
- **[Fix]** Fixed a potential issue with `sql_mode=only_full_group_by` support (added in 2.9)
- **[Fix]** Avoid error when parsing PDFs without `mbstring`
### 2.9
- **[New]** Redesigned engine configuration interface!
- **[New]** Index is now further optimized as per engine settings
- **[New]** New filter `searchwp_weight_max` to customize a maximum weight
- **[New]** New filter `searchwp_legacy_settings_ui` to use legacy settings UI
- **[New]** New filter `searchwp_indexer_apply_engines_rules` to control whether engine rules are considered during indexing
- **[New]** New filter `searchwp_indexer_additional_meta_exclusions` to control whether default additional Custom Fields are excluded from indexing
- **[New]** New filter `searchwp_supports_label_{post_type}_{support}` to customize the label used for a post type native attribute
- **[Improvement]** Additional debug statements output when enabled
- **[Improvement]** Better formatting of HTML comment debug output
- **[Fix]** Less aggressive handling of `pre_get_posts` during searching
- **[Fix]** Fix an issue with `sql_mode=only_full_group_by` (default in MySQL 5.7)