bump version

Detach `bindgen` for next release (#250)

Update version to v0.6.0 (#175)

Bump version to v0.5.0 and add changelog (#169)

Update the changelog and bump version for releasing v0.4.0 (#138)

Changes for releasing libR-sys 0.2.2 (#73)

* Increase the version number

* Tweak

* Fix crate name

update docs link.