bump to v0.4.0.

sekineh · sekineh · commit ffee63f85628 · 2020-09-29T11:51:30.000+09:00
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -6,6 +6,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.4.0] - 2020-09-29
+
+### Added
+
+* Performance improvement (#27)
+  * Avoid sift_down for unmutated PeekMut (rust#75974)
+
 ### Changed
 
 * Bump MSRV (minimum supported rust version) to rust 1.32.0.
diff --git a/Cargo.toml b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "binary-heap-plus"
-version = "0.3.1"
+version = "0.4.0"
 authors = ["SEKINE, Hideki <sekineh@me.com>"]
 description = "Enhanced version of std::collections::BinaryHeap that supports max, min, and custom-order heaps."
 license = "MIT"
