Breaking changes - isPrivate and isPublic now throws

Breaking change should be mentioned in changes please somewhere.

Now it throws when it is invalid and needs to be handled in try catch for example.

Throws -> `invalid ipv4 address`

We have handled it, but bumps in dependabot can be tricky for someone so just mentioning it here for others.

Locate the repository's changelog or release-notes file; the issue does not name a specific documentation file. Document that isPrivate and isPublic can throw "invalid ipv4 address" and require try/catch handling, then verify the breaking behavior is clearly called out for dependabot upgrades.

Written by the indexing model from the issue text.