discontinuous-range

DiscontinuousRange(1, 10).subtract(4, 6); // [ 1-3, 7-10 ]

this is a pretty simple module, but it exists to service another project so this'll be pretty lacking documentation. reading the test to see how this works may help. otherwise, here's an example that I think pretty much sums it up

###Example

var all_numbers = new DiscontinuousRange(1, 100);
var bad_numbers = DiscontinuousRange(13).add(8).add(60,80);
var good_numbers = all_numbers.clone().subtract(bad_numbers);
console.log(good_numbers.toString()); //[ 1-7, 9-12, 14-59, 81-100 ]
var random_good_number = good_numbers.index(Math.floor(Math.random() * good_numbers.length));

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