I'm a bit uncomfortable about having our `Streams.closeQuietly`. This isn't just about streams, but about any `Closeable`. Part of me likes the horrid naming of things like `Closeables2` because it makes it obvious that we're adding to / replacing behaviour in the equivalent Guava. If someone looks for a Closeables utility they are more likely to find Closeables than they are the method on Streams.

But no particularly strong feelings.