Change all license headers to comply with REUSE specification.
Fix#16132
Co-authored-by: flynnnnnnnnnn <flynnnnnnnnnn@github>
Co-authored-by: John Olheiser <john.olheiser@gmail.com>
* Hold the event source when there are no listeners
The event source does not need to run when there are no listeners. Therefore
pause it when there are none.
* add some more logging
Signed-off-by: Andrew Thornton <art27@cantab.net>