- added NOTIFICATION_HISTORY Newsletter's type
- implement basic UI for notification_history
- TODO: implement passing extra parameters in order to handle the :id part
- added stylesheet for newsletters listing
- added "status" database column on Newsletters for grouping in listings
- added duplicate link to standard newsletters
- Updated SQL schema for every created_at column so that it has a default value
- Updated unit tests based on recent changes (new methods in SubscriberSegment model)
- Added check for HelpScout initialization code so that it doesn't throw errors
- Prevents empty notification emails from being sent
- Hooks to WP's post update and rewrite post notification logic
- Prevents scheduling multiple queues of the same newsletter
- Fixes issue with segments not updating when scheduling a newsletter
- Removes depreciated hash field & associated logic
- added checks to prevent adding to the queue useless items
- fixed issue with mta settings (duplicated "host" input / renamed duplicate to "domain" for MailGun)
- fixed namespace issue on cron daemon/supervisor
- fixed typo in migration preventing the newsletter_templates table to be created.
- partially fixed cron.jsx
- refactored and fixed listing issues (related to Segments)
- removed bulk actions from segments
- added synchronize methods for WP users
- Update action in segments only for WP Users list
- added "type" column to segments (default, wp_users, dynamic...)
- added "status" column to subscriber_segment table (useful soon)
- added listing of custom fields in form editor
- ability to delete a custom field
- mades changes to the form editor in order to accomodate for the new custom fields system
- fix form editor bugs
- cleanup
- new form with default data
- load/save in form editor
- widgets -> settings form
- widgets -> shortcode for subscribers count
- widgets -> form rendering
- added useful filters to Subscribers (for status related search)
- refactor & cleanup
