* initial draft of fixing slashing * fix test * Update frame/staking/src/tests.rs Co-authored-by: Piotr Mikołajczyk <piomiko41@gmail.com> * last touches * add more detail about unbonding * add migration * fmt Co-authored-by: Piotr Mikołajczyk <piomiko41@gmail.com> Co-authored-by: parity-processbot <>