Breaking changes - isPrivate and isPublic now throws

[Cheprer]

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.

[mixmix]

in v1.1.9:

> ip.isPrivate('dog.com')
Uncaught Error: invalid ipv4 address
    at ip.isPrivate (~/projects/node-ip/lib/ip.js:323:13)

This is a change in behaviour from 1.1.8:

> ip.isPrivate('dog.com')
false