Options for print methods

[jameslairdsmith]

Would be nice to set the default values used for printing rrays. As far as I can see, at present, printing of the first dimension is bounded only by getOption("max.print") but printing of the second dimension is not bounded at all. So if you try and inspect an rray with a very long second dimension, R tries to print it all out.

Would also be nice to have the defaults similar to those of tibbles, with whatever is needed to account for the multiple dimensions.