1.8:
----
 * Better check for $serendipity['GET']['subpage'] on entry preview

1.7:
----

 * PHP 8 preparation fix
 * Fix missing markup config property


1.6:
----

 * Remove an old serendipity <= 0.7.1 check


1.5:
----

 * Optimize URI args load
 * Set Plugin consistencies
 * Use lang API - extends required version



Propagate $smarty.env.staticpage_pagetitle (and the others) so that it can be used in entries.tpl