Add Safari 4 to saucelabs.js.
Avoid `subarray` for mobile Safari.
Ensure a byte length is passed.
Attempt to fix Safari 4.
Update requires.
Optimize `_.isEqual` by using `_.keys` and ensure `arguments` objects are compared correctly.
Minor `_.sortBy` doc nit. [ci skip]
Ensure `_.callback` supports binding built-in methods. [closes #576]
Remove `support.argsObject`.
Fix unit test for rhino/ringo.
Clarify AMD exports comment. [ci skip]
Make less stable tests leverage the retry count of `asyncTest`.
Add `_.once` tests for memorized return values.
Cleanup tests and ensure the Worker test waits no more than 30 seconds (including retries).
Only use `ctorByClass` if typed array constructor is incorrect.
Update tested Firefox in the readme. [ci skip]
Add error object tests to `_.isEqual`.
Ensure `_.where` returns elements that contain all source array values. [closes #583]
Fix `_.isEqual` test in environment w/o typed arrays.
Fix failing tests.