v1.1.0

The format is based on Keep a Changelog.

Added

• assignable! macro that wraps a Future with Async so that the result can
  be used with the Assign variants of std::ops traits.

Changed

• To no_std to make the crate platform-agnostic.
• Use futures-core and futures-util as dependencies instead of futures.

Deprecated

• assignable function which is now replaced with assignable! macro. In cases
  where the function is still needed, Async::assignable can be used.