Remove native `String#contains` use in `_.contains`.
Add more emphasis on the `Note` sections
Update tested Firefox versions.
Use `_.createCallback` if `_.matches` is unavailable for the perf test.
Avoid internally passing around metadata arrays.
Use WeakMaps if available to store function metadata.
Fix accidental leaked var.
Remove sauce testing of older Firefox.
Attempt to throttle `seData`.
Fix perf regression in _.omit & _.reject.
Minor style nits.
Fix perf regression of `_.zip`.
Avoid metadata cache for perf tests of slow paths of `_.bind` and `_.partial`.
Minor var nit in `createPartialWrapper`.
Add `console.log` shim to avoid errors while deving.
Minor whitespace nit.
Cleanup `setData`.
Add `_.negate` unit test.
Add DOM node check to `_.isFunction` test.
Expose `_.isNative`.