Add release notes for 2.5.5.

_data/downloads.yml

@@ -8,7 +8,7 @@ preview:
 stable:
 
   - 2.6.2
-  - 2.5.4
+  - 2.5.5
   - 2.4.5
 
 # optional

_data/releases.yml

@@ -135,6 +135,20 @@
 
 # 2.5 series
 
+- version: 2.5.5
+  date: 2019-03-15
+  post: /en/news/2019/03/15/ruby-2-5-5-released/
+  url:
+    bz2: https://cache.ruby-lang.org/pub/ruby/2.5/ruby-2.5.5.tar.bz2
+    gz:  https://cache.ruby-lang.org/pub/ruby/2.5/ruby-2.5.5.tar.gz
+    xz:  https://cache.ruby-lang.org/pub/ruby/2.5/ruby-2.5.5.tar.xz
+    zip: https://cache.ruby-lang.org/pub/ruby/2.5/ruby-2.5.5.zip
+  sha256:
+    bz2: 1f2567a55dad6e50911ce42fcc705cf686924b897f597cabf803d88192024dcb
+    gz:  28a945fdf340e6ba04fc890b98648342e3cccfd6d223a48f3810572f11b2514c
+    xz:  9bf6370aaa82c284f193264cc7ca56f202171c32367deceb3599a4f354175d7d
+    zip: be630e814c796f3750bd892f1250851e67fc4379f75508a4cb7ca7ceb718ddef
+
 - version: 2.5.4
   date: 2019-03-13
   post: /en/news/2019/03/13/ruby-2-5-4-released/

en/news/_posts/2019-03-15-ruby-2-5-5-released.md

@@ -0,0 +1,48 @@
+---
+layout: news_post
+title: "Ruby 2.5.5 Released"
+author: "nagachika"
+translator:
+date: 2019-03-15 02:00:00 +0000
+lang: en
+---
+
+Ruby 2.5.5 has been released.
+
+This release includes a bug fix for the deadlock in the multi-thread+multi-process (using Process.fork) applications (ex: puma).
+
+See [commit logs](https://github.com/ruby/ruby/compare/v2_5_4...v2_5_5) for changes in details.
+
+## Download
+
+* <https://cache.ruby-lang.org/pub/ruby/2.5/ruby-2.5.5.tar.bz2>
+
+      SIZE:   14165422 bytes
+      SHA1:   1932db85ace80ecdbc5cfc7aada5b5123f7ad739
+      SHA256: 1f2567a55dad6e50911ce42fcc705cf686924b897f597cabf803d88192024dcb
+      SHA512: 1b56aa79569b818446440b9f2d13122bf7c2976ab9b2865f5fb62d247d7768dd4ac5b5e463709ffec0f757bff7088afd293c2a8c5349c3780763b6444bb354a8
+
+* <https://cache.ruby-lang.org/pub/ruby/2.5/ruby-2.5.5.tar.gz>
+
+      SIZE:   15996436 bytes
+      SHA1:   e6a063728950762925108abbdbf68968ec1ab5bb
+      SHA256: 28a945fdf340e6ba04fc890b98648342e3cccfd6d223a48f3810572f11b2514c
+      SHA512: 82d0ae019c02822668f7e8c7ad7f62170b059ea70a95a7a7cb26f809e2f2f0f5d25b5bb0ca147413ae42cf0fc5bf60329b56609c266556b1e9f04813c33bb4c9
+
+* <https://cache.ruby-lang.org/pub/ruby/2.5/ruby-2.5.5.tar.xz>
+
+      SIZE:   11459832 bytes
+      SHA1:   85cee62e47f0707808ff3d7cb68b6cd075a65509
+      SHA256: 9bf6370aaa82c284f193264cc7ca56f202171c32367deceb3599a4f354175d7d
+      SHA512: 06b1d58536ebfacb7b56c1e6ed4b8ab816fadc4f48c845a452554cd262e7908199a30e5793f3cbaec2db56a8803aa5c6089abf7bf06c8fc47867e97870b7dfec
+
+* <https://cache.ruby-lang.org/pub/ruby/2.5/ruby-2.5.5.zip>
+
+      SIZE:   19186230 bytes
+      SHA1:   c0b2bd2b09b40d098b1295303c820d7dd8d97d38
+      SHA256: be630e814c796f3750bd892f1250851e67fc4379f75508a4cb7ca7ceb718ddef
+      SHA512: 95604d47f3436e0be3a59742a89ac5f1c5c9493ddab8b53b154098b876b2fa12418d2adfc1c71e039a6876d209a7832efd88c0e297df5be56b8f7e92094eb487
+
+## Release Comment
+
+I wish to express my gratitude to sorah and k0kubun for their report and investigation. Thank you.

ja/news/_posts/2019-03-15-ruby-2-5-5-released.md

@@ -0,0 +1,49 @@
+---
+layout: news_post
+title: "Ruby 2.5.5 リリース"
+author: "nagachika"
+translator:
+date: 2019-03-15 02:00:00 +0000
+lang: ja
+---
+
+Ruby 2.5.5 がリリースされました。
+
+このリリースにはマルチスレッドとマルチプロセス(Process.fork)を利用したアプリケーション(例: puma)でデッドロックが発生することがある不具合の修正が含まれています。
+
+詳細は [commit log](https://github.com/ruby/ruby/compare/v2_5_4...v2_5_5) を参照してください。
+
+## ダウンロード
+
+* <https://cache.ruby-lang.org/pub/ruby/2.5/ruby-2.5.5.tar.bz2>
+
+      SIZE:   14165422 bytes
+      SHA1:   1932db85ace80ecdbc5cfc7aada5b5123f7ad739
+      SHA256: 1f2567a55dad6e50911ce42fcc705cf686924b897f597cabf803d88192024dcb
+      SHA512: 1b56aa79569b818446440b9f2d13122bf7c2976ab9b2865f5fb62d247d7768dd4ac5b5e463709ffec0f757bff7088afd293c2a8c5349c3780763b6444bb354a8
+
+* <https://cache.ruby-lang.org/pub/ruby/2.5/ruby-2.5.5.tar.gz>
+
+      SIZE:   15996436 bytes
+      SHA1:   e6a063728950762925108abbdbf68968ec1ab5bb
+      SHA256: 28a945fdf340e6ba04fc890b98648342e3cccfd6d223a48f3810572f11b2514c
+      SHA512: 82d0ae019c02822668f7e8c7ad7f62170b059ea70a95a7a7cb26f809e2f2f0f5d25b5bb0ca147413ae42cf0fc5bf60329b56609c266556b1e9f04813c33bb4c9
+
+* <https://cache.ruby-lang.org/pub/ruby/2.5/ruby-2.5.5.tar.xz>
+
+      SIZE:   11459832 bytes
+      SHA1:   85cee62e47f0707808ff3d7cb68b6cd075a65509
+      SHA256: 9bf6370aaa82c284f193264cc7ca56f202171c32367deceb3599a4f354175d7d
+      SHA512: 06b1d58536ebfacb7b56c1e6ed4b8ab816fadc4f48c845a452554cd262e7908199a30e5793f3cbaec2db56a8803aa5c6089abf7bf06c8fc47867e97870b7dfec
+
+* <https://cache.ruby-lang.org/pub/ruby/2.5/ruby-2.5.5.zip>
+
+      SIZE:   19186230 bytes
+      SHA1:   c0b2bd2b09b40d098b1295303c820d7dd8d97d38
+      SHA256: be630e814c796f3750bd892f1250851e67fc4379f75508a4cb7ca7ceb718ddef
+      SHA512: 95604d47f3436e0be3a59742a89ac5f1c5c9493ddab8b53b154098b876b2fa12418d2adfc1c71e039a6876d209a7832efd88c0e297df5be56b8f7e92094eb487
+
+## リリースコメント
+
+今回のリリースは Ruby コミッターの sorah および k0kubun さんの報告と調査に大いに助けられました。
+おふたりの助力に特に深く感謝致します。ありがとうございました。