Added Python 3.2 testing with optional dependencies to Travis
Remove specialized code for dealing with strings in HDF5 meta-data
Merge pull request #722 from astrofrog/io/more-hdf5-fixes

Minor HDF5 fixes, and added Python 3.2 optional dependency testing to Travis
Add the scale to the __repr__ of a dimensionless unit.
Add dimensionless support to Unit.physical_type
Add `is_unity` method
Put scale at end, aka Unit('dimensionless with a scale of 1000.0')
Update docs to reflect new __repr__
Remove is_dimensionless
Add tests for is_unity
Remove reference to is_dimensionless in is_unity docstring
Latest round of renaming
Privatize dimensionless constant
Merge pull request #701 from mdboom/unit/dimensionless_repr

Dimensionless unit looks the same regardless of scale
fix typo
Merge pull request #736 from nhmc/cosmology_doc_typo

fix typo
Made note of #717 in the known issues so that I can address it later
attempt to refresh master
added init
fix import error