Sylius/Sylius — pull request #1447 by winzou (2014-05-01 09:24:29+00:00)
Title: [State machine] Improve things drastically

| Q | A
| ------------- | ---
| Bug fix? | no
| New feature? | yes
| BC breaks? | no
| Deprecations? | no
| Fixed tickets | -
| License | MIT
| Doc PR | -

I'll use this PR to improve little by little our workflow thanks to the state machine.

As a starter, you can enjoy what is possible to do already.
The aim is to get rid of all classic Order/Shipment/etc events by replacing them with callbacks or events on the state machine.

(This PR needs https://github.com/yohang/Finite/pull/33 and https://github.com/yohang/Finite/pull/34 to be merged first)