Add release notes for v2.0.0

Author: BitMorphX

RELEASE_v2.0.0.md

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+# 📎 RELEASE NOTES – base64_decoder.py  
+**Version:** 2.0.0  
+**Release Date:** 2025-06-17
+
+---
+
+## 🚀 Overview
+
+**base64_decoder** is a compact CLI tool that decodes Base64-encoded Bitcoin private keys and derives all related key material and addresses.
+
+It enables fast offline transformation of raw Base64 input into WIF formats, Bitcoin addresses, and public/private key HEX representations — suitable for cryptographic testing, tool development, and educational use.
+
+---
+
+## 🔧 Core Features
+
+- 🔓 Decodes Base64-encoded private keys  
+- 🔑 Outputs WIF formats (compressed & uncompressed)  
+- 🏷️ Generates Bitcoin addresses (compressed & uncompressed)  
+- 🔍 Displays public and private keys in HEX  
+- 🎨 Colored CLI output with `termcolor`  
+- 🖥️ Optional command-line argument or interactive prompt  
+- 🔒 Fully offline usage — no internet dependency
+
+---
+
+## ✅ Included in v2.0.0
+
+- ✅ `base64_decoder.py` – CLI decoding and key conversion tool  
+- ✅ `base64_decoder.bat` – Windows launcher for one-click execution  
+- ✅ WIF encoding and Bitcoin address derivation  
+- ✅ Interactive fallback if `--base64` argument is missing  
+- ✅ SHA-256 and RIPEMD160 hash logic  
+- ✅ Robust Base64 decoding with error handling  
+- ✅ Clean terminal display using `clear()` and `termcolor`
+
+---
+
+## ⚠️ Notes
+
+- Accepts only valid Base64-encoded 32-byte private keys  
+- Uncompressed and compressed formats are both generated  
+- WIF outputs use Bitcoin mainnet prefix  
+- Use in air-gapped or isolated environments is recommended  
+- No actual blockchain interaction or validation is performed
+
+---
+
+## 📌 Related Files
+
+- [README.md](./README.md) – Main documentation  
+- [base64_decoder.py](./base64_decoder.py) – CLI decoder script  
+- [base64_decoder.bat](./base64_decoder.bat) – Windows launcher  
+- [ETHICS](./ETHICS) – Responsible usage statement  
+- [RELEASE_v2.0.0.md](./RELEASE_v2.0.0.md) – This file  
+- [LICENSE](./LICENSE) – Apache 2.0 license  
+- [NOTICE](./NOTICE) – Attributions and legal mentions
+
+---
+
+## 📜 License  
+Licensed under the [Apache 2.0 License](./LICENSE) by **BitMorphX**
+
+---
+
+## 🍱 Support
+
+★ **Bitcoin (BTC)**  
+`1MorphXyhHpgmYSfvwUpWojphfLTjrNXc7`
+
+★ **Monero (XMR)**  
+`86VAmEogaZF5WDwR3SKtEC6HSEUh6JPA1gVGcny68XmSJ1pYBbGLmdzEB1ZzGModLBXkG3WbRv12mSKv4KnD8i9w7VTg2uu`
+
+★ **Dash (DASH)**  
+`XtNuNfgaEXFKhtfxAKuDkdysxUqaZm7TDX`
+
+**We also value early privacy coins such as:**  
+★ **Bytecoin (BCN)**  
+`bcnZNMyrDrweQgoKH6zpWaE2kW1VZRsX3aDEqnxBVEQfjNnPK6vvNMNRPA4S7YxfhsStzyJeP16woK6G7cRBydZm2TvLFB2eeR`
+
+🙏 *Thank you for supporting independent research and ethical technology.*
+
+---
+
+## 👤 Author & Contact
+
+🔗 GitHub: https://github.com/BitMorphX  
+✉️ Email: [email protected]  
+💬 Telegram: https://t.me/BitMorphX
+
+> _“I morph bits, not to break, but to understand.”_  
+> — **BitMorphX**
+
+---
+
+© BitMorphX – All rights reserved.