Concatenate cubes in time

[MartinuzziFrancesco]

In the docs there's an example on how to concatenate cubes with different variables, so I was wondering if it is possible to concatenate cubes with same variables but on different years (eg 2011-2012) in the same cube. Also if there is a way to do it, I think it would be a nice addition to the docs

[felixcremer]

If you have two cubes that have the same dimensions except for the Time axis you should be able to use cat(c1, c2, dims=Ti) for the concatenation.

[lazarusA]

what about providing a complete MWE here?

[lazarusA]

see #481