Number Ranges aren't a new input type. They are standard number fields with an additional group
property.
Two consecutive number inputs can have a matching group
propery used to group the two number inputs together.
The value of the group
property can be displayed as the name of the combined input.
[
{
"name" : "min_age",
"optional" : false,
"type" : "number",
"label" : "Minimum Age",
"help_text" : "Minimum age of user.",
"default" : "2015-01-01",
"group": "Age Range"
},
{
"name" : "max_age",
"optional" : false,
"type" : "number",
"label" : "MAximum Age",
"help_text" : "Maximum age of user.",
"default" : "2015-12-31",
"group": "Age Range"
}
]