v0.6.5

Added

• Extract media type handling into BUPE.MediaType.

Changed

• Refactor builder implementation.
• Refactor publication item normalization.
• Replace BUPE.Util with a focused BUPE.UUID module.
• Enable ex_doc outdated warning checks in dev dependencies.
• Improve documentation and examples.

Full Changelog: v0.6.4...v0.6.5