Admin Columns Pro 6.4.18

* [Improved] Gravatar option added for the Last Modified Author column
* [Fixed] Deleting an HPOS order gave an error
* [Fixed] Use alias for joined tables in Sorting queries to prevent empty results
* [Fixed] Reset sorting for a table that has not yet saved settings was not possible

* [Improved] Changed the Conditional Formatting style hook from `acp/conditional_format/color_styles` to `acp/conditional_format/formats`
* [Improved] New date operators for Conditional Formatting: Within Days, More than ... days ago, Less than ... days ago
* [Fixed] Error when adding the 'Last Modified Author' column
* [Fixed] Sorting for Custom Field column with field type set to 'Default' did not work anymore
* [Fixed] The order for Saved Filters was reversed
* [WooCommerce] Added sorting to more HPOS columns
* [Updated] Admin Columns Core version 4.6.7

* [Fixed] Use the database prefix for custom WooCommerce HPOS queries
* [Fixed] Update section in the Admin was not visible anymore
* [Fixed] The style selector in Conditional Formatting could overlap multiple style selectors
* [Fixed] Error on the WPML string translation page
* [Fixed] Some custom columns could give a fatal error on the settings page
* [Improved] Give better feedback when the settings could not be saved because of missing database tables
* [Updated] Admin Columns Core version 4.6.6