Consider renaming stake variable/methods to use 'vouch' instead #9
Description
The Vouching contract uses the word stake for some variables and methods. Since we decided not to use this word anymore and use the word vouch instead, consider renaming the corresponding variables and methods (and their related tests) to follow this decision.
Note: This issue was manually transferred from the zos repository, after the vouching package was moved to a standalone repo.
Original: OpenZeppelin/openzeppelin-sdk#350