`_.sortBy` should not error on nullish elements when sorting by multiple properties.
Avoid test issues with error objects across environments.
Avoid testing constructors which may be shimmed.
Add `_.support.hostObject` and rename `isNode` to `isHostObject`.
Tweak property order note in method docs. [ci skip]
Rebuild dist.
Update docs. [closes #674] [ci skip]
Ensure wrapped arrays are compared correctly in `_.isEqual`. [closes #676]
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.