* starting a governor test refactor

* improve governor tests

* refactor compatibility tests using the governor helper

* improve governor helper

* improve governor helper

* refactor governor tests

* refactor testing

* fix testing (still TODO)

* fix tests

* fix tests

* fix spelling

* use different instances of GovernorHelper

* add vote with params support

* coverage

* simplify ERC165 helper

* remove unused proposal argument

* refactor setProposal

* lint

* refactor setProposal return values

* add a data default value

* improve proposal reconstruction and storage in helper

* proposal object refactoring

* lint

Co-authored-by: Francisco Giordano <frangio.1@gmail.com>