non/spire — pull request #18 by tixxit (2012-05-08 02:27:22+00:00)
Title: Fix bug with OrderedRingIsSign and add (again?) ConvertableTo.

I think the ConvertableTo companion object got deleted at some point, so I've re-added it. Also fixed a bug due to me not updating an Order[A].eq to Order[A].eqv (but of course, eq is still valid Scala). Switching to eqv was definitely a good idea!