Open Radar

 
Summary:
When migrating our codebase from Swift 2.2 -> Swift 3.0 we noticed a crash when you defined an array of option sets.

Steps to Reproduce:
1. Define the array:

```
let states: [UIControlState] = [.Normal, .Highlighted, .Disabled, .Selected, [.Selected, .Highlighted]]
```

2. Migrate the code

Expected Results:
In this case `.Normal` should be replaced with `[]` since the default case was removed in Swift 3

Actual Results:
The migrator crashes.

Version:
Xcode 8 beta 1

Notes:
From the discussion in the labs it sounds like the issue is option sets being contained in an array, which has the same syntax as an option set literal.