`flatten` as convinience method for stack all?

There is a bunch of operations that need to be conducted on a 1D array. It could be handy to have a convinience method that mimicks numpys flatten, i.e. works along the lines:

def flatten(dataarray, name='stacked'):
    return dataarray.stack(**{name: dataarray.dims})

What do you think?

[dcherian]

Solved by .stack=[...]?

[mathause]

Yes indeed, good catch.

Closed by #3826