v2.8.1

Changelog

• FIXED: Fix PHP warning: attempt to read propertyu "ID" on null in the "the_content" filter, #313;
• FIXED: Fix PHP warning: undefined array key "properties" in class-wp-rest-meta-fields.php, #311;
• FIXED: Update language files to ES, FR and IT (thanks to @wocmultimedia), #308;