_.partition: include iterator and context arguments in the predicate
better naming
better language in tests
Removed reference to jslitmus.js

jslitmus doesn't seem to be actually used, in that tests run fine without it.
Merge pull request #1600 from hrj/patch-1

Removed reference to jslitmus.js
Swap argument order to match convention.

Fixes #1595.
Merge remote-tracking branch 'cool/master'
Tweak to taste.
Merge pull request #1601 from braddunbar/argument-order

Swap argument order to match convention.
Correct style issues.

* Use space in array/object literals.
* Convert a forgotten deepEqual candidate.
Merge pull request #1602 from braddunbar/style

Correct style issues.
Remove accidental global.
Merge pull request #1604 from braddunbar/accidental-global

Remove accidental global.
fix treatment of null/undefined destination in _.defaults and _.extend
Merge pull request #1607 from davidchambers/extend-null

fix treatment of null/undefined destination in _.defaults and _.extend