...nning of {ERC20}.
*
* Requirements:
*
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function tr...
.../2021-08-06 22:00:00的时间戳
// sells have fees of 12 and 6 (10 * 1.2 and 5 * 1.2)
uint256 public immutable sellFeeIncreaseFactor = 120;
// use by default 300,000 gas to process auto-claiming dividends
//默认使用300000 gas 处理自动申请分红...