0.6.0

Loss-aware draft export

Version 0.6.0 adds read-only Substack draft backups as Markdown.

substack drafts export 12345
substack drafts export 12345 --output backup.md
substack --json drafts export 12345

result = api.export_draft_to_markdown(12345)

Exports preserve supported Markdown semantics. Unsupported nodes remain visible as versioned, URL-safe base64 JSON markers and are also returned in unsupported_nodes.

Existing files require --force. Export performs no server writes.

See the 0.6.0 release notes for the full details.