skip memory tests on python 2.7 (fix for prev commit) and python 3.5, because apparently there were major changes to tracemalloc in python 3.6 that probably (??) account for the failures
skip memory tests on python 2.7 (fix for prev commit) and python 3.5,
because apparently there were major changes to tracemalloc in python 3.6
that probably (??) account for the failures

radio-astro-tools/spectral-cube,low-sky/spectral-cube,jzuhone/spectral-cube,e-koch/spectral-cube,keflavich/spectral-cube