Mailster - Email Newsletter Plugin for WordPress 4.1.7

fixed: escaping on web version
fixed: subject placeholder tag in title was not replaced on the webversion
improved: css improvements
update plugin api info

- fixed: line height on form selector input field
- fixed: PHP Warning: preg_replace(): Compilation failed with certain shortcodes.
- fixed: PHP deprecated notice
- fixed: admin header was visible on the newsletter homepage
- fixed: deeplink of steps works again
- fixed: dynamic properties are deprecated
- fixed: fatal error on tags triggers if no tag has been set
- fixed: logos were not applied to some templates
- fixed: translation wasn't loaded before the setup wizard
- improved: bounce performances

security: fixed possible Local File Inclusion (LFI) vulnerability reported by Patchstack
security: fixed possible Cross Site Scripting (XSS) vulnerability reported by Patchstack
fixed: linked images in templates weren't mapped correctly.
fixed: missing array index in options.php
fixed: using "given-name" for autocomplete value instead of "name" on the first name field for block forms
improved: legacy forms inclusion
improved: activation experience for Envato users
improved: bounce handler to not timeout during processing of large quantities of bounce messages
removed: beta notice
removed: health check notice.
reverted: forcing unsubscribe link on the bottom of the mail if not present in the email.
fully tested with WordPress 6.5