Improve trimmer to allow the editing out of scenes. Currently the trimmer can only select what we want to keep, but it would be beneficial if we could also use it to keep everything but our selection. This would be very useful for cutting out inappro

Improve trimmer to allow the editing out of scenes. Currently the trimmer can only select what we want to keep, but it would be beneficial if we could also use it to keep everything but our selection. This would be very useful for cutting out inappropriate scenes.