Feature request: Select duplicate frames - e.g. make multiple cuts across clip and then have option to either select all the clips that have duplicated frames or all the frames that don't.
This is useful in a number of scenarios
e.g. you have a rough cut, you chuck all the B roll at the end of the sequence, Timeline Spanner>Show Duplicate Frame Markers (aka dupe detection) shows you all the shots you've already used. If you could select all these frames and delete them (and then use Sequence>Close Gap) you'd be left with only the parts of clips you've not used yet.
e.g. you have to relink audio to video after already cutting selects. but something goes wrong - say an interview - so you relink the audio to the long video clip at the end of the timline and then use the dupe detection to line it up again. In this case you'd want to delete all the non-dupe's
