Open
Description
I would find a Tables.delete_younger operation quite useful. I think it could be directly analogous to the existing delete_older operation, and would simply delete any edges (and mutations) that have a child younger than the specific date. For the specific case I have, I'd like mark younger samples as non-samples but that could easily be done as a postprocessing step.
Note this is related to the discussion about "pollarding" in #281.
We may also consider an equivalent to "decapitate" where we insert nodes into the edges that are broken, but I don't have any immediate application for this so wouldn't bother with it unless someone really wants it.