New type errors from Immutable.js after upgrading to Flow v0.59

I started getting the following error from immutable.js type definitions after upgrading to Flow version 0.59.0. I'm using version 3.8.1 of Immutable.js, and this section had never thrown an error before.

```
Error: node_modules/immutable/dist/immutable.js.flow:399
399: static of(...values: T[]): SetSeq;
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function type. This type is incompatible with
380: static of(...values: T[]): IndexedSeq;
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function type
This parameter is incompatible:
399: static of(...values: T[]): SetSeq;
^^^^^^^^^ SetSeq. This type is incompatible with
380: static of(...values: T[]): IndexedSeq;
^^^^^^^^^^^^^ IndexedSeq
```