fixed: querying subscribers do no longer return subscribers with status deleted.
fixed: adding an already deleted subscriber working as expected.
fixed: wrong timestamp on signups if subscriber exists.
improved: support for multiple campaigns triggered by action hooks.
improved: removed skeleton loader on foreign columns in overview.
improved: action hook campaigns support now multiple hooks, separated with a comma.
improved: database updates now run in the background (optional).
improved: taxonomies dropdown now uses select2 library to better handle large taxonomy entries.
new defaults strings form confirmation message.
confirmation page on newsletter homepage now wrapped with wpautop.
new filters: mailster_editor_tags and mailster_notification_content.
