This files describes API changes in the editor_atto code. === 2.7.4 === * When adding a shortcut to the button of a plugin, atto will add a layer of validation to ensure that only the required keys are pressed. However, if you are using a custom keyConfig object you must validate the shortcut yourself. This is particularly important for non-English keyboard users. For more information read the documentation of EditorPluginButtons::_addKeyboardListener() and MDL-47133.