WP 5.7: Notice about invalid usage of ‘wp_add_inline_script’

Hey,

first of all, thank you for this plugin, it simplifies my workflow significantly.

After an update to WordPress 5.7 a notice appeared, that was not visible on any version before 5.6 and lower:

Notice: WP_Scripts::localize was called incorrectly. The $l10n parameter must be an array. To pass arbitrary data to scripts, use the wp_add_inline_script() function instead. Please see Debugging in WordPress for more information. (This message was added in version 5.7.0.) in /XXX/wp-includes/functions.php on line 5313

I tracked the notice back to this line of this plugin:
https://plugins.trac.wordpress.org/browser/wooswipe/trunk/wooswipe.php#L77

And the notice has been introduced in WP 5.7:
https://github.com/WordPress/WordPress/commit/032aec8df2bf2ebdfd46dd19c6df5dd470a9ee4b

The plugin still works with WP 5.7.

Thank you very much,

Micky5991