### New Features
- add threading primitives with feature toggle
If the `threading` feature is set, the `threading` module will contain thread-safe primitives
for shared ownership and mutation, otherwise these will be their single threaded counterparts.
This way, single-threaded applications don't have to pay for threaded primitives.
### Changed (BREAKING)
- parallel utilities now use `Send + Clone` insted of `Send + Sync`
This helps to assure that thread-local computations always work with the
kind of types we provide. The ones that are carrying out actions are
notably not `Sync` anymore.
We cater to that by defining our bounds accordingly, but for those
who want to use other utilities that need Sync, using types like
`Repository` and `thread_local!()` is the only way to make this
work.
### Commit Statistics
- 8 commits contributed to the release over the course of 5 calendar days.
- 2 commits where understood as [conventional](https://www.conventionalcommits.org).
- 2 unique issues were worked on: #259, #263
### Thanks Clippy
[Clippy](https://github.com/rust-lang/rust-clippy) helped 1 time to make code idiomatic.
### Commit Details
* **#259**
- unify trait bounds for parallel code: prefer Clone over Sync (c805d0b)
- remove trait bounds to allow single-threaded applications to exist (3c790e0)
* **#263**
- Make it possible to return read guards with packed buffers (f5c3c8f)
- parallel utilities now use `Send + Clone` insted of `Send + Sync` (e7526b2)
- A mad attempt to use thread-local everywhere and avoid Sync… (0af5077)
- add threading primitives with feature toggle (7e95d8a)
* **Uncategorized**
- Adjust changelogs prior to release (ec38950)
- thanks clippy (db1bb99)