OpenZeppelin Contracts v3.0 release candidate

OpenZeppelin Contracts 3.0 RC is out!! :zap:

Everything’s ready for migrating your project to Solidity 0.6, plus:

  • A redesigned access control solution :guardsman:
  • Easier extensibility via hooks :fishing_pole_and_fish:
  • Straightforward migration from Contracts 2.x :arrow_right_hook: