feat!: version 3.0 RC

See merge request !10

feat!: return types interface

See merge request !4

feat!: return types interface

See merge request !3

BREAKING CHANGE: quiqqer v2 has been renamed to quiqqer/core. a new major version will be created here so that we can still develop for both versions.

BREAKING CHANGE: VerificationInterface now has return types. Existing classes that implement this interface must also be adapted.

Dev

See merge request !1

feat: more clear error message if a Verification URL is called and the Verification does no longer exist

refactor: show error message if an exception is thrown during the onSuccess() or onError() methods of a Verification