**Enhancements**
A new `NullSelector` control has been added to the list of default controls. This control allows you to filter a field based on whether or not it is null. When using this control, you can specify the label to use for the is null and is not null options. This can be done by setting the `isNullLabel` and `isNotNullLabel` options when setting the control in the config file. An example of this is shown below for the HGMD control in Varify:
javascript
c.config.set('fields.instances.110.form.controls', [{
options: {
isNullLabel: 'Not in HGMD',
isNotNullLabel: 'In HGMD'
},
control: 'nullSelector'
}])
Concepts containing multiple fields now display "jump-to" links to make the fields apparent and accessibly (463).
**Other**
- The `maxSerranoVersion` has been increased to include the new `2.3.3` Serrano release in the valid range.
- The test suite has been refactored to use a live server. This only affects contributors to Cilantro itself.