chore(ci): add Node.js 9

chore(package): update dependencies

chore(release): 1.1.4

fix(package): update yargs to version 10.0.3 (#7)

chore(package): update @commitlint/config-angular to version 4.2.1 (#6)

chore(package): update @commitlint/cli to version 4.2.1 (#5)

chore(release): 1.1.3

chore(lock): fix package-lock.json

fix(package): update yargs to version 9.0.1 (#4)

docs: make changelog style consistent

chore(release): 1.1.2

fix(cli): fixup "bail out if gitbook not found"

chore(ci): remove Node.js 7.x from matrix

chore(lint): upgrade commitlint to 3.x

style: use comma-dangle rule