Bump to version 2.4.0

CHANGELOG.md

@@ -5,6 +5,15 @@ project adheres to [Semantic Versioning](http://semver.org/).
 Older versions are detailed as [GitHub
 releases](https://github.com/mudge/re2/releases) for this project.
 
+## [2.4.0] - 2023-11-11
+### Added
+- Improve garbage collection and support compaction in newer versions of Ruby.
+  Thanks to @byroot for contributing this by switching to Ruby's TypedData API.
+
+### Changed
+- No longer needlessly return copies of frozen strings passed to
+  `RE2::Regexp#match` and return the original instead.
+
 ## [2.3.0] - 2023-10-31
 ### Changed
 - Upgrade the bundled version of RE2 to 2023-11-01.
@@ -180,6 +189,7 @@ releases](https://github.com/mudge/re2/releases) for this project.
 ### Fixed
 - In Ruby 1.9.2 and later, re2 will now set the correct encoding for strings
 
+[2.4.0]: https://github.com/mudge/re2/releases/tag/v2.4.0
 [2.3.0]: https://github.com/mudge/re2/releases/tag/v2.3.0
 [2.2.0]: https://github.com/mudge/re2/releases/tag/v2.2.0
 [2.1.3]: https://github.com/mudge/re2/releases/tag/v2.1.3

README.md

@@ -5,7 +5,7 @@ Ruby bindings to [RE2][], a "fast, safe, thread-friendly alternative to
 backtracking regular expression engines like those used in PCRE, Perl, and
 Python".
 
-**Current version:** 2.3.0  
+**Current version:** 2.4.0  
 **Supported Ruby versions:** 2.6, 2.7, 3.0, 3.1, 3.2  
 **Bundled RE2 version:** libre2.11 (2023-11-01)  
 **Supported RE2 versions:** libre2.0 (< 2020-03-02), libre2.1 (2020-03-02), libre2.6 (2020-03-03), libre2.7 (2020-05-01), libre2.8 (2020-07-06), libre2.9 (2020-11-01), libre2.10 (2022-12-01), libre2.11 (2023-07-01)
@@ -39,8 +39,9 @@ If you are using Debian, you can install the [libre2-dev][] package like so:
 
     $ sudo apt-get install libre2-dev
 
-Recent versions of RE2 require a compiler with C++14 support such as
-[clang](http://clang.llvm.org/) 3.4 or [gcc](https://gcc.gnu.org/) 5.
+Recent versions of RE2 require [CMake](https://cmake.org) and a compiler with
+C++14 support such as [clang](http://clang.llvm.org/) 3.4 or
+[gcc](https://gcc.gnu.org/) 5.
 
 If you are using a packaged Ruby distribution, make sure you also have the
 Ruby header files installed such as those provided by the [ruby-dev][] package
@@ -269,6 +270,9 @@ Contributions
 * Thanks to [Peter Zhu](https://github.com/peterzhu2118) for
   [ruby_memcheck](https://github.com/Shopify/ruby_memcheck) and helping find
   the memory leaks fixed in 2.1.3.
+* Thanks to [Jean Boussier](https://github.com/byroot) for contributing the
+  switch to Ruby's `TypedData` API and the resulting garbage collection
+  improvements in 2.4.0.
 
 Contact
 -------

lib/re2/version.rb

@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module RE2
-  VERSION = "2.3.0"
+  VERSION = "2.4.0"
 end