Changelog for `stuff`

0.2.0

Breaking changes

Renamed all occurrences of extra to other (for example in methods)

Improvements

Made (): StuffingStrategy generic over all backends (with some trait bounds) instead of just usize, u64, and u128.
Added an MSRV (minimum supported rust version) policy (MSRV of 1.31.0)
Upgraded sptr dependency to 0.3.1
Improve documentation