prior-bugs.md

• <= v0.1.0: incorrect implementation of from_be, to_be on all integers.
• <= v0.8.0: incorrect implementation of unchecked_shl, unchecked_shr for BUint with 64 bit digits.
• <= v0.8.0: incorrect implementation of Add<$Digit> for all BUints (where $Digit is the underlying digit type).
• <= v0.8.0: lcm incorrectly panics when self is zero.
• v0.7.0 - v0.9.1: the implementations of shr, shl, wrapping_{shr, shl}, overflowing_{shr, shl}, checked_{shr, shl}, rotate_left, rotate_right, from_be_slice, from_le_slice methods and any methods that involved left-shift or right-shift operations, contained undefined behaviour (this was due to a premature stabilisation of a feature in the Rust compiler - see rust-lang/rust#117905 and #36). Note that all tests for these methods were still passing for each relevant version, so it is very likely that the code was still working correctly. However, as of the time of writing, the code that they relied on will soon be rejected by the compiler. They have now been replaced with safe implementations which are just as fast.