2.1.0

The biggest community-driven release in Klar's history, thank you!

• Support for whitelisting CVEs and additional detail in the output report by @thereverendtom
• Support to configure docker/clair timeouts (CLAIR_TIMEOUT, DOCKER_TIMEOUT env vars) by @ppacher
• Support for existing registry tokens (DOCKER_TOKEN env var) by @jaumann
• Better Readme - spelling and Grammar changes by @ccsalway
• Bugfix - duplicate entries in output by @thereverendtom