Partition: pass key and object to predicate given context
Merge pull request #1686 from megawac/partition-fix

Partition: pass key and object to predicate given context
Remove unnecessary variable declaration.
Merge pull request #1687 from braddunbar/style

Remove unnecessary variable declaration.
Simplify chain
use non-strict, non-deep equal in context test (non-strict so we can
compare booleans).
pick: use create callback
Merge pull request #1691 from megawac/chain

Simplify chain
Merge pull request #1690 from megawac/_.pick-opt

pick: use create callback
bindAll throws a reference error if a given method is undefined on the incoming object
fix for previous commit - strings in bindAll ReferenceError message use single quotes
Use values in object case of contains
bindAll now uses bind instead of createCallback -- additional tests to ensure that errors are thrown for invalid input
Spec null object case for _.pick and _.omit
_.pick can retreive items on primitive prototype
Add missing coverage test for _.every and _.some
Clean up reduce tests
Add _.filter coverage tests
_.map context coverage
Use official names instead of aliases