v0.4.0

Changelog

• add support for docker via docker hub
• add support for Go 1.12
• update licensing surname, as my name changed!
• .editorconfig, .gitattributes, .markdown-lint.yml, .pre-commit-config.yaml for dev
• CONTRIBUTING.md because everyone needs one, right?
• Re-enable megacheck and typecheck for tests
• Attempt to enable GO111MODULE for all of goreleaser
• Loads of documentation updates & additions
• new logo!
• clean up examples dramatically
• flags.Port is now a string - Using an int didn't allow for using http and https shorthands
• Prettier static HTML page for examples