astropy/astropy — pull request #856 by mdboom (2013-03-08 15:11:36+00:00)
Title: 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.

Not sure whether this is a bugfix or not. The VOTable spec says nothing about what the default precision should be, so I suppose it's technically right as-is, but this is certainly less surprising.