Update CHANGELOG.md

This update transforms the Gemini AI Toolkit from a basic API wrapper into a comprehensive, user-friendly, and highly customizable interface for interacting with Google's Gemini API. The changes encompass a complete redesign of the codebase, introducing new functionalities, improving modularization, enhancing user experience, and providing advanced configuration options.

.github/CHANGELOG.md

@@ -4,6 +4,36 @@ All notable changes to the 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).
 
+## [1.2.0] - 03/08/2024
+
+This update transforms the Gemini AI Toolkit from a basic API wrapper into a comprehensive, user-friendly, and highly customizable interface for interacting with Google's Gemini API. The changes encompass a complete redesign of the codebase, introducing new functionalities, improving modularization, enhancing user experience, and providing advanced configuration options. 
+
+Below is an overview of the key changes:
+
+### Added
+- config.py: A new module for dynamic configuration management, allowing users to set and manage environment variables and API configurations more flexibly.
+- client.py: Introduced to encapsulate all HTTP request handling, including GET and POST requests, with robust error handling and user feedback via loading animations.
+- gemini.py: Defines specialized classes (Chat, Text, and Vision) for handling specific types of interactions with the Gemini API, with support for advanced configuration options.
+- Loading Animations: To provide immediate feedback to the user during network requests, improving the interaction experience.
+- Comprehensive Error Handling: Detailed error messages and handling mechanisms across the toolkit to guide users through resolving issues efficiently.
+- Streaming API Response Support: For real-time feedback and interaction, particularly beneficial for lengthy operations.
+- Advanced Command-Line Interface in cli.py: Offers extensive customization options for API interactions, including safety settings, generation configurations, and operation modes.
+- Safety and Generation Configuration Options: Users can specify detailed safety settings and generation parameters for fine-tuned control over API response content and behavior.
+
+### Fixed
+- Error Handling Improvements: Refined error handling across the codebase, ensuring that errors are caught and reported more clearly and helpfully.
+- Configuration Load Handling: Enhanced the loading and validation of environment variables to prevent issues related to missing or incorrect configurations.
+
+### Removed
+- Redundant Code and Modules: Removed base_api.py, gemini_chat.py, gemini_text.py, gemini_vision.py, and gemini_cli.py due to their functionalities being integrated into the new, more efficient modules.
+- Hardcoded Configuration Values: Eliminated the need for directly editing source code to change API keys, model choices, etc., in favor of using environment variables and .env configuration.
+
+### Changed
+- Modularization and Organization of the Codebase: Restructured the toolkit into more logical, focused modules for better maintainability, scalability, and ease of use.
+- Enhanced User Feedback Mechanisms: Loading animations and improved error messages for a more interactive and informative user experience.
+- Increased Flexibility in API Interactions: Through the introduction of advanced configuration and customization options, making the toolkit adaptable to a wide range of use cases and preferences.
+- Documentation and Inline Comments: Updated and added comprehensive comments and documentation throughout the codebase to facilitate understanding and future modifications.
+
 ## [1.1.0] - 02/17/2024
 
 Refactored code structure: