This is a lighter version of #348 that only introduces columnation in the merge batcher, rather than as a general container. We thought this would be easier, but the change runs all over various files, so perhaps we should look at the generality of #348 again.
This is a lighter version of #348 that only introduces columnation in the merge batcher, rather than as a general container. We thought this would be easier, but the change runs all over various files, so perhaps we should look at the generality of #348 again.
cc: @antiguru