Merge pull request #66 from Metaswitch/release-0.15.0

Update README and CHANGELOG for 0.15.0.

CHANGELOG.md

@@ -11,13 +11,13 @@ version number is tracked in the file `VERSION`.
 ### Changed
 ### Fixed
 
-## [0.15.0] - 2020-01-??
+## [0.15.0] - 2020-01-28
 ### Changed
-- Drops support for futures 0.1, and implements `std::future` instead, allowing
+- Drop support for futures 0.1, and implement `std::future` instead, allowing
   you to use this this library inside `async` functions, allowing anything that
   returns a `CassFuture` to be `await`ed.  This is a breaking change, and will
   require you to update your call-sites to either use `std::future`, or wrap
-  them with a compatibility shim.
+  them with a compatibility shim (e.g., `futures::compat`).
 
 ### Added
 - Adds a new method, `Cluster.connect_async` that returns a future, allowing

README.md

@@ -44,6 +44,16 @@ There are additional examples included with the project in [`tests`](tests/) and
 [`examples`](examples/).
 
 
+## Futures (version 0.15)
+
+Since version 0.15, this crate uses `std::future`, allowing your code to
+use `futures:0.3`, `async/await`, etc.
+
+Previous versions (up to 0.14) used `futures:0.1`. You can either remain on
+the 0.14 stream, update your code to use `std::future`, or use a compatibility
+shim (e.g., `futures::compat`).
+
+
 ## Migrating from version 0.8
 
 The API changed significantly in version 0.10.