lodash/lodash — pull request #677 by nylen (2014-08-21 19:55:42+00:00)
Title: If a constant value is given to zipObject, repeat it for each key

This makes it much easier to turn an array of values into a hash with
those values as keys, using `_.object(arr, true)` or similar. This is
useful when you need to check whether lots of values are in the array.