Version 0.1.11 The major highlight of this release is the addition of a new "default" method on the `Sink` trait, `Sink::close`. This method is used to indicate to a sink that no new values will ever need to get pushed into it. This can be used to implement graceful shutdown of protocols and otherwise simply indicates to a sink that it can start freeing up resources. Currently this method is **not** a default method to preserve backwards compatibility, but it's intended to become a default method in the 0.2 series of the `futures` crate. It's highly recommended to audit implementations of `Sink` to implement the `close` method as is fit. Other changes in this release are: * A new select combinator, `Future::select2` was added for a heterogeneous select. * A `Shared::peek` method was added to check to see if it's done. * `Sink::map_err` was implemented * The `log` dependency was removed * Implementations of the `Debug` trait are now generally available. * The `stream::IterStream` type was renamed to `stream::Iter` (with a reexport for the old name). * Add a `Sink::wait` method which returns an adapter to use an arbitrary `Sink` synchronously. * A `Stream::concat` method was added to concatenate a sequence of lists. * The `oneshot::Sender::complete` method was renamed to `send` and now returns a `Result` indicating successful transmission of a message or not. Note that the `complete` method still exists, it's just deprecated.