Constructing N-dimensional rectangular regions

[juliohm]

In Julia v1.0 the type CartesianRange was removed in favor of CartesianIndices. To construct a N-dimensional rectangular region, we have to do:

CartesianIndices(ntuple(i -> start[i]:finish[i], N))

which is relatively ugly. Could we have the old syntax like CartesianIndices(start, finish) work again?

[timholy]

Already done, see #29440