Squeezes the data range in an sqw object to eliminate empty bins
Syntax:
>> wout = compact(win)
Input:
------
win Input object
Output:
-------
wout Output object, with length of axes reduced to yield the
smallest cuboid that contains the non-empty bins.
% Overloaded methods:
sqw/compact
sqw/compact
d4d/compact
d3d/compact
d2d/compact
d1d/compact
d0d/compact