- Add optional zeroize support - Add optional quickcheck support - Add optional valuable support - Make integers #[repr(transparent)]. - Make Slice struct #[repr(transparent)]. - Performance enhancement for `shr` methods - Make wrapping_rem panic message same as for primitives - Breaking: make unchecked_shl, unchecked_shr take u32 as shift argument, not Self. - Fixed incorrect implementation of unchecked_shl, unchecked_shr for 64 bit digit integers. - Fixed incorrect implementation of Add<$Digit> for all BUints - Fixed lcm implementation to not panic if self is zero - Changed to #[derive(PartialEq, Eq)] to allow pattern matching on const values. - Added trait `BTryFrom` for fallible conversions between bnum integers (`TryFrom` can't be used due to the automatic implementation of `TryFrom for T`). - Don't require `std_rng` and `small_rng` features of rand crate except when testing.