Updated dependencies and tools:
- Update SCION dependency to v0.6.0 and RAINS to v0.2.0 (#171)
- Update Go to version 1.14 and quic-go to v0.19.2 (#171)
- Update golangci-lint to v1.31.0 (#171)
Updated functionality and documentation:
- Simplify and extend hostname resolution (#155)
- Add minimal README for shttp examples
- Miscellaneous corrections and cleanups