Use Python 2 /3 compatible source (no 2to3)
Remove bundled astroquery/extern/six.py
Use astropy.extern.six instead of Astroquery bundled version
Fix monkey patching of urllib in test_utils.py
Fix ImportError on Python 3
Python 3 fixes (so that it works without 2to3)
Minor Python 3 fix in splatalogue pointed out by @keflavich
Merge pull request #320 from cdeil/no_2to3

Use Python 2 /3 compatible source
Missing html import in Eso.query_survey()
Fixed failing Eso remote tests
Replaced commons.radius_to_unit by Angle()
Replaced deprecated UnitsException by UnitsError
Updated error message in irsa_dust test.
Fixed urlopen use.
Removed radius_to_unit tests.
Merge pull request #324 from jwoillez/fixes_for_astropy0.4

Many fixes for astropy0.4 and remote tests