This is a release PR for **lib** to version **2.0.0**.
Upon merging, you will still need to manually publish the cargo crate.
```
$ cd crates/crates/lib
$ cargo publish
```
To merge this release, review the changes then say:
`bors r+ p=10`
Co-authored-by: Félix Saparelli <felix@passcod.name>
