Implement clojure.core.reducers/mapcat and some initial reducers tests

Description

The first patch implements a reducers equivalent of clojure.core/mapcat, and the second patch adds a new reducers.clj to the clojure tests that checks that map, mapcat, filter, and reduce are equivalent in clojure.core and clojure.core.reducers.

Environment

None

Status

Assignee

Unassigned

Reporter

Tassilo Horn

Labels

None

Approval

None

Patch

Code and Test

Fix versions

Affects versions

Priority

Minor
Configure