message: add style instance for EpochSlotId
diff: @@ -39,7 +39,7 @@ impl Style for block::genesis::BodyProof {
  console::style(self).yellow()
  }
  }
  -impl Style for block::types::SlotId {
  +impl Style for block::types::EpochSlotId {
  fn style(self) -> StyledObject<Self> {
  console::style(self)
  .white()
  