added match
make _.has and _.match more consistent
match creates a predicate from functions, keys, and objects
use in to test for property
drop 'first' parameter from where
reduce match to its most basic form
changelog: fix 1.4.2 release date
Merge pull request #1462 from davidchambers/fix-release-date

changelog: fix 1.4.2 release date
merged _.match
Merge branch 'master' of https://github.com/jashkenas/underscore