Bring in changes from MR #18: Add a possibility to pass extra arguments to puppeteer

https://gitlab.pagedmedia.org/tools/pagedjs-cli/merge_requests/18/diffs

enabled an automatic merge when the pipeline for 27b0d37c succeeds

By Fred Chasen on 2021-05-18T05:56:16 (imported from GitLab)

merged

By Fred Chasen on 2021-05-18T05:56:18 (imported from GitLab)

mentioned in commit 05e3246a

By Fred Chasen on 2021-05-18T05:56:19 (imported from GitLab)

mentioned in merge request !18 (closed)

By Fred Chasen on 2021-05-18T05:57:47 (imported from GitLab)