Release 3.3.2

• CI on Ruby 3.3.
• Point to release notes in README.
• Explicit dependency for getoptlong.
• Add SCRIPT_LOADERS and API.add_script_loader to allow alternate formats (e.g., YAML-LD) to define loaders for extracting script content.
• Fix logic on retaining protected term definitions if redefined equivalently.
• Pass extractAllScripts to documentLoader.
• In load_html, load scripts from all matched types, not just the first.
• The extractAllScripts should default to false in flatten.
• When compacting @type or @language maps, account for compacted_item not being a Hash. (Fixes #62)