Plugin Breaks edit post JS in WordPress 4.3

[JayWood]

Ran into an issue today when updating to WordPress 4.3, this line breaks the entire JS on the edit page: /wds-cmbw-date-range-field.php::131

The fatal error, though it points to jQuery, not any script on the project, which is weird.

Commenting out that form field fixes the JS issue.

[sb-lc]

Uncaught TypeError: Cannot use 'in' operator to search for 'length' in false

i get this with wp 4.3 as well, the date range field type is unusable

[bradp]

Fixed in #6