1.1.0 Feature: add setting to enforce 2FA

What's Changed

• FEATURE: Enforce 2FA by @JamesAlias, @Pingu501 and @lorenzulrich in #14

We refactored the second factor authentication process under the hood to use a middleware instead of authentication token/provider, but introduced no breaking changes.

To enable the new feature add the following in your settings:

Sandstorm:
    NeosTwoFactorAuthentication:
        # enforce 2FA for all users
        enforceTwoFactorAuthentication: true

Full Changelog: 1.0.5...1.1.0