Is there a changelog for @intercom/messenger-js-sdk?

Hi team,

I'm looking to upgrade @intercom/messenger-js-sdk from 0.0.13 to 0.0.18 in our Angular application, but I can't find a changelog or release notes anywhere.

The npm package doesn't link to a public GitHub repository, and there's no CHANGELOG.md in the package.

Could you please:

1. Publish a changelog for the SDK (even just in the README)?
2. Or point me to where release notes are documented?

This would help developers assess upgrade risk and understand new features. I've done a diff and can see additions like hideNotifications() and whoami(), but official documentation would be appreciated.

Thanks!