Implements only the required ERC20 methods. This contract is used
test how contracts handle ERC20 contracts that have not implemented
Mostly copied from Consensys EIP-20 implementation: https://github.com/ConsenSys/Tokens/blob/fdf687c69d998266a95f15216b1955a4965a0a6d/contracts/eip20/EIP20.sol
value tokens are moved from one account (
value may be zero.
Emitted when the allowance of a
spender for an
owner is set by
a call to
value is the new allowance.