Use rlang::arg_match() instead of match.arg() - issue: #672

[mojister]

Summary

Use rlang::arg_match() instead of match.arg()

Related GitHub Issues and PRs

• It closes Use rlang::arg_match() instead of match.arg() #672

Checklist

• I replaced match.arg() with rlang::arg_match()
• I updated the News.md as it is described in Guidelines for Contributing

Remarks

• There is an error as I check the package (even before undertaking any changes) on my system. It complains about a failure in helper-render_formats.R file.

[rich-iannone]

LGTM!