astropy/astropy — pull request #1073 by mdboom (2013-05-08 19:17:57+00:00)
Title: Should Imperial units be imported by default?

Currently we include a hodge-podge of U. S. imperial units in the default set of units.

Since these are not terribly useful for science or astronomy, and British imperial units which are likely to name clash with these, should we perhaps not include them by default, but instead require the user to

```
from astropy.units import imperial
```

to access them?