Mailster - Email Newsletter Plugin for WordPress 4.1.7

fixed: Option bar is fixed after a certain scroll threshold again.
fixed: decimals in the height or width field of the editbar for the selected image in the editor prevents submitting the form on Firefox.
fixed: timeframe now respects sites timezone.
fixed: export into Excel file may strip leading 0
improved: test mails are now sent to the current user
added: $org_content argument to mailster_handle_shortcodes filter
added: mailster_form_list_order to handle list order in forms

fixed: comparing empty date values on MySQL 8
fixed: issue while calculating time frame over midnight
fixed: issue with merge tags when rss and regular tag is used
fixed: use of hard-coded database prefix
improved: removed/replaced deprecated jQuery methods
improved: media editor link in settings
improved: support for PHP 8

fixed: issue with subscriber button on some versions of Firefox
fixed: problem downloading templates with special characters in filepath
fixed: issue with manual sync button in Firefox
fixed: post taxonomies are not respected for some autoresponder campaigns if the initial post status is publish
fixed: issue creating images if content folder is outside of WordPress root
fixed: empty values in form submission were not stored
improved: URL hijacking mechanics to handle subdomains