time.sleep(-1) hangs indefinitely on Windows (apparently by design).  Since the purpose of passing this value in the test was to test the behavior of bad input to a function being timed, let's instead use something that is unambiguously bad input for time.sleep() on all platforms.
Change the default floating point output in VOTable from '%g' to '%s'.  This does a better job of showing "enough" precision to correctly roundtrip the values.
Merge pull request #854 from iguananaut/issue-854

test_timer hanging on Windows.
Change from np.array to asarray when setting from non-ndarray item
Merge pull request #852 from weaverba137/fix-setup

Fix scripts/README.rst bug
Make IPAC and DAOphot examples work literally and show output
When downloading a file, and we know it's size from the header, check that the temp filesystem and, if necessary, the cache filesystem have enough space before beginning the download.
Prevent downloading a file twice when identifying and reading it through the registry system.
Add TimePlotDate format for input to matplotlib plot_date()
Add test of TimePlotDate
Add example of using plot_date format with plt.plot_date()
Add time format for datetime.datetime objects
Update error messages for Time input validation
Generalize way of identifying formats where format kwarg is optional
Add tests for datetime format
Update docs for datetime format
Update CHANGES
Minor tweaks in time docs
Merge pull request #726 from taldcroft/table-new-col

Use setitem syntax to create a new Table column
fixed test failure due to `reason` not always being present on HTTPError objects