pellucidanalytics/datomisca — pull request #77 by dwhjames (2013-10-09 21:41:53+00:00)
Title: Use Keyword views to R/W ref attributes

- Make the `ToDRef` type class more flexible: allow types viewable as `Keyword` to be lifted into a `DRef`.
- And similarly replace `Attribute2EntityReaderCast[DRef, Card, Keyword]` with `Attribute2EntityReaderCast[DRef, Card, K]` with implicit `Keyword => K`.