- improved security: exported and imported settings not easily accessible
- improved usability of the settings page
- fixed parameter "amount" not showing any tags when0 (affecting only PHP output as array)
- fixed Group Tag admin page not appearing at selected taxonomy
- fixed "non-object" notice if $screen is not available
- fixed relationship parent - child not saved with tags/terms
- Growing code made it necessary to refactor the structure for better overview and future extensibility.