This crate should probably reexport event_listener

[James Liu]

Each version of event-listener-strategy is fairly closely coupled with a version of event-listener (within reason for semver). It's also impossible to use the crate without taking on a separate dependency on the coupled version of event-listener. It might make sense to just reexport the types from event-listener under a module to avoid this overhead for users of the crate.

[John Nunley]

Yes, this sounds good to me