Python 3.2.x is deprecated, so I thought it would be
good to get tests running on some newer pythons. I've
switched from the python3-gi package to using 'pgi' from
pypi, because the apt-installed python3-gi was having trouble
importing.
pgi required python 3.3+ (see: https://pypi.python.org/pypi/pgi),
so I've removed python 3.2 from the test matrix. Let me know if
we're using python 3.2 anywhere, but as far as I know plinth is
run on python 3.4.3 with debian sid on the freedombox image.
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