docs: add release notes for v1.3.0

Add comprehensive release notes documenting all changes in v1.3.0:
- Complete documentation overhaul
- Open source project infrastructure
- Development tools and automation
- Code improvements and fixes
- Testing improvements

Release notes are ready for GitHub release.

Author: Emil Karimov

.github/RELEASE_TEMPLATE.md

@@ -0,0 +1,228 @@
+# EKNetwork v1.3.0 Release Notes
+
+## 🎉 Major Documentation & Infrastructure Release
+
+**Release Date:** December 10, 2025  
+**Version:** 1.3.0
+
+This release represents a major milestone in EKNetwork's evolution, focusing on comprehensive documentation, open source project infrastructure, and developer experience improvements. While there are no breaking API changes, this release significantly enhances the project's maturity and usability.
+
+---
+
+## 📚 What's New
+
+### Complete Documentation Overhaul
+
+#### API Reference Documentation
+- **New:** Full API reference (API.md) documenting all public interfaces
+  - NetworkManager class and all methods
+  - NetworkRequest protocol and properties
+  - All types: HTTPMethod, RequestBody, MultipartFormData, RetryPolicy, etc.
+  - Error types and response types
+  - Protocol abstractions for testing
+  - Complete method signatures with parameters and return types
+  - Usage examples for each component
+
+#### International Documentation
+- **New:** Russian language documentation
+  - README_RU.md - Complete Russian translation of main documentation
+  - API_RU.md - Full API reference in Russian
+  - Makes the library accessible to Russian-speaking developers
+
+#### Enhanced Main Documentation
+- **Improved:** README.md completely rewritten
+  - Attractive formatting with badges and emojis
+  - Detailed feature descriptions and advantages
+  - Extensive code examples for all use cases
+  - Best practices section
+  - Testing information
+  - Support and contribution sections
+  - Links to all documentation resources
+
+#### Additional Documentation
+- **New:** PROJECT_STRUCTURE.md - Detailed project structure guide
+- **New:** SUMMARY.md - Client summary for potential users
+- **New:** OPEN_SOURCE_CHECKLIST.md - Verification of open source standards
+- **New:** ROADMAP.md - Planned improvements and known issues
+
+---
+
+## 🏗️ Open Source Project Infrastructure
+
+### Essential Open Source Files
+- **New:** LICENSE - MIT License for the project
+- **New:** CODE_OF_CONDUCT.md - Contributor Covenant code of conduct
+- **New:** SECURITY.md - Security policy and vulnerability reporting process
+- **New:** CONTRIBUTING.md - Comprehensive contribution guidelines
+- **New:** SUPPORT.md - Support information and resources
+- **New:** CHANGELOG.md - Complete changelog from v1.0.0 to v1.3.0
+
+### GitHub Configuration
+- **New:** Issue templates
+  - Bug report template
+  - Feature request template
+  - Improvement template
+- **New:** Pull request template
+- **New:** GitHub Actions CI/CD workflow for Swift
+- **New:** CODEOWNERS file for code review assignments
+- **New:** FUNDING.yml for project funding information
+
+---
+
+## 🛠️ Development Tools & Automation
+
+### Scripts
+- **New:** `scripts/create_issues.sh` - Automated GitHub issue creation
+  - Creates issues from ROADMAP.md
+  - Uses GitHub API
+  - Supports GITHUB_TOKEN authentication
+- **New:** `scripts/README_ISSUES.md` - Documentation for issue creation
+
+### Project Planning
+- **New:** ROADMAP.md - Comprehensive roadmap
+  - 10 identified issues with priorities
+  - 8 planned improvements
+  - Status tracking for each item
+
+---
+
+## ✅ Code Improvements
+
+### Fixes
+- **Fixed:** File header comment corrected (EKNetwork.swift → NetworkManager.swift)
+- **Fixed:** Package.swift cleaned up and Swift 6.0 explicitly declared
+- **Fixed:** All changelog dates updated with actual release dates
+
+### Enhancements
+- **Added:** `RequestBody(formURLEncoded:)` convenience initializer
+- **Improved:** `.gitignore` with comprehensive Swift/Xcode patterns
+- **Added:** Exclusion of internal analysis files from version control
+
+---
+
+## 🧪 Testing Improvements
+
+### Expanded Test Coverage
+- **Expanded:** From basic tests to comprehensive test suite
+- **Total:** 21 tests covering all major scenarios
+- **New Tests:**
+  - Query parameters handling
+  - Form URL encoded body
+  - Multipart form data
+  - Conflicting body types validation
+  - HTTP error handling
+  - Custom error decoder
+  - Retry policy
+  - Token refresh mechanism
+  - User-Agent configuration
+  - Different HTTP methods (GET, POST, PUT, DELETE, PATCH)
+  - Raw data body
+  - Content-Length headers
+
+### Test Quality
+- All tests passing
+- Coverage for edge cases
+- Error scenario testing
+- Proper file headers in test files
+
+---
+
+## 📊 Statistics
+
+### Documentation
+- **New Files:** 15+ documentation files
+- **Total Lines:** ~5,000+ lines of documentation
+- **Languages:** English and Russian
+- **Coverage:** 100% of public API documented
+
+### Code Changes
+- **Files Changed:** 27 files
+- **Lines Added:** 5,211+
+- **Lines Removed:** 104
+- **Net Change:** +5,107 lines
+
+### Project Structure
+- **Documentation Files:** 15
+- **Configuration Files:** 7
+- **Scripts:** 2
+- **Test Files:** 1 (expanded)
+
+---
+
+## 🚀 Migration from 1.2.2
+
+**No breaking changes!** This is a backward-compatible release.
+
+### What You Need to Know
+
+1. **No API Changes:** All existing code continues to work without modifications
+2. **New Documentation:** Explore the new documentation to discover best practices
+3. **New Features Available:** Check API.md for any features you might have missed
+4. **Contributing:** Review CONTRIBUTING.md if you want to contribute
+
+### Recommended Actions
+
+1. **Read the Documentation:**
+   - Review API.md for complete API reference
+   - Check README.md for updated examples
+   - Explore ROADMAP.md for planned improvements
+
+2. **Update Your Integration:**
+   ```swift
+   // No code changes required, but you can now use:
+   dependencies: [
+       .package(url: "https://github.com/emvakar/EKNetwork.git", from: "1.3.0")
+   ]
+   ```
+
+3. **Explore New Resources:**
+   - Check SUMMARY.md if you're evaluating the library
+   - Review CONTRIBUTING.md if you want to contribute
+   - See ROADMAP.md for planned features
+
+---
+
+## 📦 Installation
+
+### Swift Package Manager
+
+```swift
+dependencies: [
+    .package(url: "https://github.com/emvakar/EKNetwork.git", from: "1.3.0")
+]
+```
+
+### Requirements
+- Swift 6.0+
+- iOS 18.0+
+- macOS 15.0+
+
+---
+
+## 🎯 What's Next
+
+See [ROADMAP.md](ROADMAP.md) for planned improvements:
+- Memory leak fixes in ProgressDelegate
+- Enhanced error handling
+- Task cancellation support
+- Metrics and monitoring
+- And more...
+
+---
+
+## 🙏 Acknowledgments
+
+Thank you to all contributors and users who have helped improve EKNetwork!
+
+---
+
+## 📞 Support
+
+- **Documentation:** [README.md](README.md), [API.md](API.md)
+- **Issues:** [GitHub Issues](https://github.com/emvakar/EKNetwork/issues)
+- **Security:** [SECURITY.md](SECURITY.md)
+
+---
+
+**Full Changelog:** [CHANGELOG.md](CHANGELOG.md)
+