pegboard 0.7.2

What's Changed

• update snaps by @zkamvar in #141
• Create two introduction vignettes by @zkamvar in #142
• $validate_links() method: differentiate between images and links in report summary by @zkamvar in #144
• release version 0.7.2 by @zkamvar in #145

Full Changelog: 0.7.1...0.7.2