Now we are using `jQuery.noConflict()` in tests, so it should be
slightly easier to detect when this happens next time. Tests just
need to be written for the component.
This closes https://github.com/select2/select2/issues/2985.
This adds a test that makes sure that the inline data attribute
overrides the options that are passed in during initialization.
This also adds a test for the `createTag` option, which is used
when tagging.
