Migrate to Stateswap

[itsMarcoSolis]

As an trading platform
I need to migrate to the Stateswap contracts
So that we can leverage it's support and ecosystem.

Details and Assumptions

• https://github.com/stateswap/stateswap-v1

Acceptance Criteria

Given Otomee currently works with the Wyvern contracts
When the platform is used
Then it should work with the Stateswap contracts instead.