dense contracts

• auth contract in progress; done
• import auth to main contract CrowdFunding done
• vault contracts in progeess;

// testing Authentification in progress : (verified)

- register function passed 
- getUser function passed
- updateUserDetails function passed
- deletedUser function passed
- changeRoles function passed

// vault contracts

contribute function to do DONE and some get return functions to do DONE

IN PROGRESS

// testing Vault in progress

- create new Safe passed
- update Specific safe passed