Changes in 2.0:
  - New feature: Drag/drop tasks and projects
  - New keybinding: F2 to pop up edit dialog
  - New keybinding: DEL to delete items
  - New keybinding: ENTER now submits edit dialogs (for easy renaming) ~ has some issues yet on windows
  - New keybinding: ESC now exits edit dialogs
  - Bugfix: File open dialogs did not allow the creation of new files.
