Version 3.0 proposals

[bliuchak]

I was thinking to upgrade Node.js to version 20. This is a breakable change, thus it requires major version release. I feel this is a good opportunity to release with this change some other major changes (see below).

My proposals for v3.0.0:

• Upgrade minimal supported version of Node.js to 20 #601
• Migrate library from CJS to ESM #640
• Upgrade Typescript to version 5 #641
• Prefer pure async/await instead of nodeify #642
• Update @types/node (currently 18.x, should match Node 20+) (done as part of Node 20 upgrade)

Postpone for v3.1.0:

• Migrate tests from JS to Typescript
• Replace mocha by vitest
• Remove deprecated request package (replace with node-fetch or built-in fetch)

[jancurn]

Sounds good to me 🚀