Changes for clojure.core/even?

rafmagana on Tue, 22 Jul 2014
user=> (even? 2)
true

user=> (even? 1)
false
jafingerhut on Wed, 28 Mar 2012
user=> (even? 2)
true
user=> (even? 1)
false
dpritchett on Tue, 13 Jul 2010
user=> (even? 2)
true
user=> (even? 1)
false