v2.15.0

Summary

• ⚠️ Minimum Go version is now 1.22 ⚠️ due to use of new stdlib router enhancements
• New /trailers endpoint added
• Server-Timings headers/trailers added to endpoints with client-controlled response times

What's Changed

• chore(build): bump docker image to 1.23 by @mccutchen in #180
• feat: use enhanced stdlib HTTP router by @mccutchen in #181
• chore(ci): fix code coverage uploads by @mccutchen in #183
• refactor: small tweak to template rendering helpers by @mccutchen in #182
• feat: add /trailers endpoint by @mccutchen in #184
• refactor: minor tweaks to /drip implementation by @mccutchen in #185
• feat: add Server-Timing headers/trailers where relevant by @mccutchen in #186

Full Changelog: v2.14.1...v2.15.0