This reverts commit 5120a44d0f. Conflicts: Parser/Meshparser.hs
5120a44d0f
It now takes a PROPER square, as in ((xmin, ymin), (xmax, ymax)) instead of ((xmin, xmax), (ymin, ymax)) and also works with negative values. Because the meaning of the arguments has changed, we also had to fix all uses of it.
