Set version to 1.0.0-rc.1

Set version to 1.0.0-rc.0

0.5.0

Upgrade deps (#113)

* Upgrade version.

* Upgrade a few deps.

Bump number.

Resumable downloads. (#84)

* Resumable downloads.

* Clippy.

* Proof of resumability through manual corruption.

* Speeding up downloads (less writes) + more accurate estimates (moving
window)

* Remove unwrap.