Merge branch '101-mastermind' into 'master'

.gitlab-ci.yml

.gitlab-common-ci.yml

.gitlab-common-node-ci.yml

README.md

a-brief-history-of-date/.gitlab-ci.yml

h2g2/.gitlab-ci.yml

h2g2/package-lock.json

mastermind/.eslintrc.js

mastermind/.gitignore

mastermind/.gitlab-ci.yml

mastermind/README.md

mastermind/jest.config.js

mastermind/package-lock.json

mastermind/package.json

mastermind/src/Mastermind.spec.ts

mastermind/tsconfig.json

roman-calculator/.gitlab-ci.yml

trip-service-kata-typescript/.gitlab-ci.yml