Remove obsolete Number class and interface, tweak deps

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Fixed tickets | -
| License       | MIT
| Doc PR        | -

This adds new component and bundle to phpspec configuration. It also adds the ``sequence`` component deps to ``order`` component. I think moving the default state config imports to core bundle makes it easier to use. :)