Bug#743554: Forwarded to upstream

[Ole Streicher]

Control: tag -1 upstream
Control: forwarded -1 https://github.com/astropy/astropy/issues/2171

These problems are already forwarded to upstream. While the
test_composite_static_matrix_transform failure could be fixed by
increasing the tolerance, the checksum test failures would need to be
silenced or disabled.

However, I am afraid that the checksum test failure exposes a real
problem that was not in the 0.3.0 version, so instead of just silencing
it I will wait for a new version from upstream. See the upstream bug
report for details.

Best

Ole