Update vendor/qunit-extras.
Add `/` to characters escaped by `_.escapeRegExp`
Add `_.escapeRegExp`, pad, & trim tests.
Tweak `_.max`, `_.min`, and trim helper comments. [ci skip]
Cleanup `_.isObject` and `_.isRegExp`.
Simplify `_.defaults`.
Make `_.merge` align with `_.assign` exit early snippet.
More `_.isObject` cleanup.
Ensure that `_.transform` checks that `object` is an object before using it as the `accumulator` `[[Prototype]]`.
Remove IIFE in test/saucelabs.js.
Cleanup platforms in test/saucelabs.js.
Rebuild dist.