This release includes following PR:

Functional PRs:

• PR #228: [Profiler] Show profiler in yellow when a response is slow (@rpkamp)
• PR #221: [Config] Add the option to use a custom handler class (@rrajkomar)
• PR #216: [Profiler] Add request profiling to performance metrics (@rpkamp)
• PR #215: [Config] Add option to create lazy clients (@muspelheim)
• PR #211: [Tests] Infection PHP is added. (@slash3d)
• PR #208: [Profiler] Timing information for each request

Documentation PRs:

• PR #217: [Doc] Add Configuration Reference
• PR #214: [Doc] Testing section in CONTRIBUTING.md
• PR #212: [Doc] Guide: How to create a single-file plugin
• PR #207: [Doc] Autowiring Clients
• PR #206: [Doc] Intercept request and response
• PR #205: [Doc] Disable throwing exceptions on HTTP errors

Thanks to all contributors! :tada: