FixedPriceFactory.sol#L9
LPDAFactory.sol#L9
OpenEditionFactory.sol#L9
transferOwnership function is used to change Ownership from Ownable.sol.
Use a 2 structure transferOwnership which is safer.
safeTransferOwnership,  use is more secure due to 2-stage ownership transfer.
Use Ownable2Step.sol
Ownable2Step.sol
