v1.0.0

Modernize for Python 3.9+

• Fix 12 bugs (duplicate params, missing error handling, no HTTPS, no timeouts, etc.)
• Add connection pooling, context manager support, structured error parsing
• Add new API methods: set_owner, set_times, get_content_summary, delegation tokens
• Replace setup.py with pyproject.toml
• Add unit test suite (39 tests)