docs: Update CHANGELOG

closes #2 #4

CHANGELOG.md

@@ -5,6 +5,26 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [2.0.0] - 2023-05-07
+
+Stable version of Vigenere-API.
+This update provides an OpenAPI interface to use Vigenere algorithm.
+You can cipher and decipher content.
+
+### Added features:
+
+- Vigenere algorithm [#1](https://etulab.univ-amu.fr/d19006523/vigenere-api/-/issues/2).
+    - Cipher method at the address: /api/v2/vigenere/decipher
+    - Decipher method at the address: /api/v2/vigenere/decipher
+
+  You need to use the POST method to send the JSON content to cipher or decipher.<br>
+  The JSON format is:
+  "content": str
+  "key": str
+- Provides links to use Caesar algorithm in the V2 API.
+    - Cipher method at the address: /api/v2/caesar/decipher
+    - Decipher method at the address: /api/v2/caesar/decipher
+
 ## [1.0.0] - 2023-05-06
 
 First stable version of Vigenere-API.

pyproject.toml

 [tool.poetry]
 name = "Vigenere-API"
-version = "1.0.0"
+version = "2.0.0"
 description = """\
 The project provides an API to use cipher, decipher and decrypt method with the Vigenere algorithm.\
 The Caesar algorithm is provided for the cipher method and decipher method.\