chore: Add master branch for linting on TravisCI
chore: Add master branch for linting on TravisCI

See https://github.com/marionebl/conventional-changelog-lint/issues/7

shubheksha/web-ext,rpl/web-ext,mozilla/web-ext,kumar303/web-ext,mozilla/web-ext,shubheksha/web-ext,rpl/web-ext,kumar303/web-ext