Updating for v5

[Gesma94]

Closes #39

Checklist

• [x] run npm run test and npm run benchmark
• [x] tests and/or benchmarks are included
• [ ] documentation is changed or added
• [x] commit message and code follows the Developer's Certification of Origin and the Code of conduct

CC @simoneb

Just a quick comment: I noticed the folder benchmark, but no script to run them. Thus, I wrote these two:

"bench:format-date": "node benchmark/format-date.js",
"bench:format-message": "node benchmark/format-message.js"

Though, I didn't know if we wanted this in the repo, so I didn't push this change

[Gesma94]

Apparently, there was a missing peer dependency which then lead to an error. Add a resolutions entry to package.json that should fix the yarn commands

[gurgunday]

Thanks!