v0.4.5

What's Changed

• fix(ci): use rsync to fetch RFC XML after rfc-editor.org retired the bulk tarball by @ronaldtse in #26
• feat: add RfcIndex model + fix Artwork src and Dd blockquote round-trips by @ronaldtse in #29
• chore: refresh .rubocop_todo.yml by @ronaldtse in #30

Full Changelog: v0.4.4...v0.4.5