v3.5.1

Changelog:

• Added exports to package.json (thanks @KaelWD / #17)
• The swetrix.orig.js file has been removed from the dist. It was not described in the documentation and was not recommended to be used, but if you were using this file, please opt to use swetrix.js instead.

Other than that, there were no other user-facing changes.

DX wise:

• package-lock.json is now removed from .gitignore
• Updated all the dependencies to the latest version.
• At least node 22 is now required to build this package.