v0.8.1

What's Changed

• Point the docs at specular 0.20 and mermoid-ascent by @russwyte in #117
• Bump sbt-zipx to 0.19.1 and sbt to 2.1.0-RC1 by @russwyte in #119
• Bump Saferis to 0.21.0 by @russwyte in #120
• ci: zipx version updates by @early-effect-zipx[bot] in #121
• Open the ship line at 0.8.1 by @russwyte in #122

Full Changelog: v0.8.0...v0.8.1