Remove duplicate peerDependencies

[insertmike]

Write one to two sentences summarizing this PR

Remove duplicate peer-dependencies which are listed as dependencies as well.

Description

What was changed in this pull request?

Remove duplicate peer-dependencies which are listed as dependencies as well.

Why is it necessary?

Fixes #128

Checklist

• [x] Provided a concise title as a semantic commit message (e.g. "fix: correctly handle undefined properties")
• [x] Updated CHANGELOG.md
• [ ] Added or updated Tests added or updated
• [x] Documentation added or updated in README.md
• [ ] Example(s) added or updated
• [ ] Screenshot, gif, or video attached for visual changes

[flekschas]

See my reply to the ticket. Removing the peer dependency should break the bundle because the bundle does not contain regl nor pubsub-es.

[flekschas]

I'm closing this PR as I'm not planning to remove the peer dependencies. Since npm version 7 peer dependencies are installed automatically so all the user has to do is npm i regl-scatterplot. I've sent the recommended minimum version of npm to 7 in package.json. Supporting older version of npm is not really my focus at this point.

And the reason to keep regl and pub-sub-es as peer dependencies is simply because when used in larger application, one might want to render other things with regl and use pub-sub-es for other communication. Removing them as a peer dependency and bundling them together with regl-scatterplot would mean that any wrapper application has two copies if regl and pub-sub-es. That'd not be ideal.

Please let me know if I'm missing something and I'm happy to reopen the PR.