- uptaded Subscriber & Segment routers' test
- moved add/remove segments logic to Subscriber::createOrUpdate
- fixed Router\Segments save not returning errors
- added -f flag to run unit test command in order to fail fast
- pass only id to "$endpoint->get($id)" in React forms instead of array
- updated routers according to the ->get($id) change
- refactored a bit the way form creation works
- added unit tests for Segments router
- 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)
- 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
