Underscore.js 1.1.7
Underscore.js 1.1.6
Underscore.js 1.1.5
Underscore 1.1.4 is on the books.
Underscore.js 1.1.3
Underscore 1.1.2
Underscore 1.1.1
Underscore.js 1.1.0
Underscore 1.0.4, with _.memoize
Underscore 1.0.3