A more idiomatic way of trying a non-blocking send on a buffered channel

and falling back to a blocking send inside a goroutine.

This really needs to be fixed. The situation only arises when events are
sent and aren't pulled off the channel using {Wait,Poll}ForEvent.
Namely, if the event send blocks, the entire program will deadlock.

Using a goroutine is not ideal because we lose a guarantee of order:
that events are processed in the order of their arrival. However, it
seems OK as a temporary band-aide for a situation that probably doesn't
arise too often.

What I need to do is implement a dynamic queue. Here is a reference
implementation: http://play.golang.org/p/AiHBsxTFpj

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