* Remove Zeroize tests * Remove `Zeroize` requirements from `Group::Pk` * Remove `Copy` requirements from `Group::Pk` * Change to `ZeroizeOnDrop` requirements for `Group::Sk` * Add note why we don't use `elliptic_curve::PublicKey`
* Remove Zeroize tests * Remove `Zeroize` requirements from `Group::Pk` * Remove `Copy` requirements from `Group::Pk` * Change to `ZeroizeOnDrop` requirements for `Group::Sk` * Add note why we don't use `elliptic_curve::PublicKey`