v0.8.0 — Unlock the AST

v0.8.0 — Unlock the AST

Breaking Changes

• YAML() instance API: New YAML() class replaces module-level parsing for configuration. pyrs_yaml.parse() still works as shorthand.
• Python Node API: New Node(doc) class exposes AST with ind(), walk(), ilter(), parent, children, o_yaml().
• MergedView: doc.merged() returns a read-only dict-like view with merge keys resolved.
• Lifecycle warnings: Node.release() marks stale nodes; accessing released nodes emits RuntimeWarning and raises YamlDocumentError.
• Document metadata: doc.version() returns the YAML spec version.

✨ Features

• Python Node API with JSONPath-like query language in Node.find()
• MergedView — read-only anchor merge view
• Node.release() + RuntimeWarning lifecycle warnings
• doc.version() metadata
• pytest parametrize refactoring across 5 test files (498→322 lines)

🔧 Bug Fixes

• Node.to_yaml(): rom_dict() returns str, not YamlDocument — fixed branching logic
• MergedView: handle sequence-root documents
• _parse_jsonpath: deep scan (..) and wildcard (\$..*) detection order
• Removed duplicate pytest_collection_modifyitems in conftest.py

🧪 Testing

• 3 new test files: test_yaml_instance.py, test_node_api.py, test_merged_view.py
• 52 new test cases across all v0.8.0 features
• 460 Python tests + 106 Rust tests all passing