Mailster - Email Newsletter Plugin for WordPress 4.1.7

* fixed: radio and dropdown values weren't populated on profile in some cases
* fixed: wp_mail now supports coma separated emails if used by Mailster
* fixed: PHP notice with autoresponders on PHP 7.1
* fixed: link for buttons were pre filled with the URL from the previous selected button
* fixed: PHP notices on Cron lock
* fixed: issue with defined constants if GEO library is loaded in a third party plugin
* fixed: display issue of emojis in tinymce of multi elements
* fixed: link of images wasn't populated correctly
* fixed: reading filesize on missing file during export
* improved: ever re-signup will respect the forms double-opt-in setting
* improved: using SQL_CALC_FOUND_ROWS on subscribers overview to speed up queries
* improved: form profile compatibility with certain themes
* improved: get referer on form signup
* improved: pre cache queries on autoresponder overview
* added: option for legacy POP3 method on bounce settings
* added: 'mailster_update_option_*' filter to alter option on save
* added: 'mailster_get_signups_sql', 'mailster_queue_campaign_subscriber_data' filters
* added: 'mailster_cookie_time' filter to adjust Mailster cookie expiration time
* added: 'mailster_get_current_user' and 'mailster_get_current_user_id' methods
* changed: 'mailster_unsubscribe_link' hook position and added campaign_id to arguments

• fully tested on WordPress 4.8
• fixed: exporting subscribers
• fixed: strip slashes on list descriptions
• fixed: SQL issue when unassign lists from subscribers
• fixed: encoding issue while saving campaigns on some servers
• improved: display Mailster username on Dashboard
• improved: removed usage of create_function for PHP 7.2
• improved: better sanitation and checks on date fields
• added: mailster_keep_tags filter to keep tags
• change: some default values on plugin activation

• fixed: checkboxes were always checked by default
• fixed: status info on user time based auto responder
• fixed: save settings button not enabled in some cases
• fixed: duplicating of other campaigns without capabilities
• fixed: spelling mistakes
• improved: html tags in custom field names
• improved: compatibility with caching plugins
• improved: excerpts are now generated if not defined via more tag or explicit
• improved: loading fall back if notification.html is missing
• improved: removed redundant white spaces in plain text versions
• improved: links in plain text version are now grouped together below the content
• improved: compatibility with third party templates
• improved: CSS rules for RTL languages
• added: mailster_get_last_post_args filter to alter post arguments
• added: month to user time based autoresponder time frames
• updated: templates page