Bump crossbeam-channel to v0.4.3

Author: Stjepan Glavina

crossbeam-channel/CHANGELOG.md

@@ -1,3 +1,7 @@
+# Version 0.4.3
+
+- Change license to "MIT OR Apache-2.0".
+
 # Version 0.4.2
 
 - Fix bug in release (yanking 0.4.1)

crossbeam-channel/Cargo.toml

@@ -4,7 +4,7 @@ name = "crossbeam-channel"
 # - Update CHANGELOG.md
 # - Update README.md
 # - Create "crossbeam-channel-X.Y.Z" git tag
-version = "0.4.2"
+version = "0.4.3"
 authors = ["The Crossbeam Project Developers"]
 license = "MIT OR Apache-2.0"
 readme = "README.md"