Merge #793

793: Release rayon 1.4.0 / rayon-core 1.8.0 r=cuviper a=cuviper

- Implemented a new thread scheduler, [RFC 5], which uses targeted wakeups for
  new work and for notifications of completed stolen work, reducing wasteful
  CPU usage in idle threads.
- Implemented `IntoParallelIterator for Range<char>` and `RangeInclusive<char>`
  with the same iteration semantics as Rust 1.45.
- Relaxed the lifetime requirements of the initial `scope` closure.

[RFC 5]: rayon-rs/rfcs#5


Co-authored-by: Josh Stone <cuviper@gmail.com>

Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "rayon"
 # Reminder to update html_rool_url in lib.rs when updating version
-version = "1.3.1"
+version = "1.4.0"
 authors = ["Niko Matsakis <niko@alum.mit.edu>",
            "Josh Stone <cuviper@gmail.com>"]
 description = "Simple work-stealing parallelism for Rust"
@@ -19,7 +19,7 @@ members = ["rayon-demo", "rayon-core"]
 exclude = ["ci"]
 
 [dependencies]
-rayon-core = { version = "1.7.1", path = "rayon-core" }
+rayon-core = { version = "1.8.0", path = "rayon-core" }
 crossbeam-deque = "0.7.2"
 
 # This is a public dependency!

RELEASES.md

@@ -1,3 +1,25 @@
+# Release rayon 1.4.0 / rayon-core 1.8.0 (2020-08-24)
+
+- Implemented a new thread scheduler, [RFC 5], which uses targeted wakeups for
+  new work and for notifications of completed stolen work, reducing wasteful
+  CPU usage in idle threads.
+- Implemented `IntoParallelIterator for Range<char>` and `RangeInclusive<char>`
+  with the same iteration semantics as Rust 1.45.
+- Relaxed the lifetime requirements of the initial `scope` closure.
+
+[RFC 5]: https://github.com/rayon-rs/rfcs/pull/5
+
+## Contributors
+
+Thanks to all of the contributors for this release!
+
+- @CAD97
+- @cuviper
+- @kmaork
+- @nikomatsakis
+- @SuperFluffy
+
+
 # Release rayon 1.3.1 / rayon-core 1.7.1 (2020-06-15)
 
 - Fixed a use-after-free race in calls blocked between two rayon thread pools.