3.4.0

[Polon-84]

1. Update react to the latest version
2. Update dependencies to remove critical and high security issues
3. Fix demo

[kdeloach]

Hi, thanks for your contribution. I prefer to generate the release bundle myself for security purposes.

Could you please make these changes?

1. Remove package-lock.json (new file)
2. Remove generated files in dist/
3. Update commit comment to describe changes

After you make those changes, I'll merge to master and generate the release.

Thanks.