backport of the get_terminal_size function from shutil
A backport of the get_terminal_size function from Python 3.3's shutil.

Unlike the original version it is written in pure Python rather than C,
so it might be a tiny bit slower.

Maintainer: Alexandr Shadchin <shadchin@openbsd.org>

WWW: https://pypi.python.org/pypi/backports.shutil_get_terminal_size
