Confusion Regarding the Latest Stable Version of Proton

[n3g2]

Dear Maintainers,

I am experiencing some confusion when trying to determine the latest stable version of Proton. I noticed that the version displayed on npm is 6.0.3, but the latest release on GitHub is 5.4.3. This has left me unsure which version to install and use.

npm Version: 6.0.3
When I query npm, it shows that the latest version of Proton is 6.0.3, but I am not certain if this is indeed the latest stable version.
GitHub Version: 5.4.3
The releases page on GitHub indicates that the most recent release is 5.4.3.
Request for Clarification:
Could you please clarify which version of Proton is the latest stable one?
If 6.0.3 is the latest stable version, where can I find the corresponding release information on GitHub? Alternatively, if 5.4.3 is the latest version, why does npm display a higher version number?
Where should I download or install the latest stable version of Proton?