This specifically addresses the problem where some jobs of a mapped-over
collection have failed. Instead of filtering the failed collection and
restarting the workflow at this position (involving a lot of copy-paste ...)
the user can now limit the rerun to the problematic jobs and the workflow
should resume from there.
Should fix https://github.com/galaxyproject/galaxy/issues/2235.
This is one possible implementation, it would also be feasible to not
manipulate the original collection, but to copy the HDCA and then to replace
collection elements and replace all references for jobs that depend on the HDCA,
as we do for HDAs. This implementation seems simpler, but let me know if you
see problems with this approach.
Nicola Soranzo