Release v0.1.8

What's Changed

• [docs] add example failover script by @coderigo in #13
• [feature] make healthcheck port configurable by @coderigo in #17
• [feature] condense gossip discovery logs by @coderigo in #18
• [feature] improve-dry-run-logging by @coderigo in #19
• [feature] standardise terms for peer discovery by @coderigo in #20

Full Changelog: v0.1.7...v0.1.8