Merge branch 'master' into gh-package-registry-downloads

.circleci/config.yml

.eslintrc.yml

CONTRIBUTING.md

core/base-service/base.js

core/base-service/base.spec.js

core/base-service/examples.js

core/base-service/examples.spec.js

core/base-service/service-definitions.js

core/service-test-runner/cli.js

core/service-test-runner/runner.js

core/service-test-runner/service-tester.js

doc/TUTORIAL.md

doc/self-hosting.md

frontend/components/markup-modal/markup-modal-content.tsx

frontend/components/usage.tsx

frontend/lib/redirect-legacy-routes.ts

frontend/lib/service-definitions/index.spec.ts

frontend/lib/service-definitions/index.ts

package-lock.json

package.json