Prismatic/plumbing — pull request #47 by danielcompton (2014-08-13 02:01:52+00:00)
Title: Change keyword lookup to work with records

dissoc-in fails with
```
ClassCastException my.namespace.MyRecord cannot be cast to clojure.lang.IFn
```
when called with a record. This is because records don't implement IFn and can't look themselves up given a key. Adding a get will allow dissoc-in to work with records.