lacoop6tu

Results 2 issues of lacoop6tu

Fixes #478 Fixes #370 . Changes proposed in this PR: - Add mocks - Remove fork - Remove old docs files - Update Publisher Flow Diagram - Update Readme -...

Status: DoNotMerge

First commit about mStable opportunity, already working in kovan environment with USDT, will update to use USDC. Pushed also the kovan test, both manually and by using the opportunity contract.