Updated CHANGELOG.md

CHANGELOG.md

@@ -5,9 +5,30 @@ 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] - Unreleased
+## [2.0.0] - 2023-06-18
 
-Major rewrite
+This version of TamerLib offers a comprehensive framework for implementing parallel processing in PHP applications.
+With features aimed at scalability and robust handling of tasks and exceptions, it allows developers to build efficient,
+reliable applications.
+
+This makes previous versions of TamerLib obsolete, and as such, this version is not backwards compatible with previous
+versions.
+
+### Added
+ - Parallel Processing: Utilize the full power of your CPU by executing tasks concurrently using sub-processes or 
+   remote processes.
+ - Task Queuing: Tasks are managed using a task queue and result queue, making it easy to keep track of tasks and their
+   results.
+ - Horizontal Scalability: TamerLib allows the creation of Tamer Nodes which act as supervisors for workers. Nodes and
+   workers communicate with a central Redis Server, enabling applications to scale horizontally. 
+ - Exception Handling: Exception handling is built into TamerLib, allowing developers to catch and handle exceptions
+   thrown by workers.
+ - Introduced `tm::initialize`, `tm::createWorker` for client setup and worker creation respectively.
+ - Added methods `tm::do` and `tm::wait` to manage job execution and completion tracking.
+ - `tm::initialize`, `tm::addFunction` and `tm::run` have been added to help with setting up and managing workers.
+ - Node implementation introduced, allowing supervision of workers and horizontal scaling of applications.
+ - Workers can now throw exceptions which are caught and re-thrown on the client side.
+   This allows for robust error handling across different parts of the application.
 
 ## [1.0.1] - 2022-02-28