v0.7.19

What's Changed

• Improve docs for #526 by @kupiakos in #559
• [ci] Don't deny warnings in UI tests by @joshlf in #567
• [roll-pinned-toolchain-versions] Allow manual trigger by @joshlf in #568
• [ci] Roll pinned nightly toolchain by @google-pr-creation-bot in #565
• [ci] Roll pinned nightly toolchain by @google-pr-creation-bot in #570
• Lower MSRV to 1.60 by @joshlf in #561

Full Changelog: v0.7.18...v0.7.19