Register v0.5.1

[kahaaga]

@JuliaRegistrator register

[JuliaRegistrator]

Registration pull request created: JuliaRegistries/General/4255

After the above pull request is merged, it is recommended that a tag is created on this repository for the registered package version.

This will be done automatically if Julia TagBot is installed, or can be done manually through the github interface, or via:

git tag -a v0.5.1 -m "<description of version>" c5888529a428daaa20effba01f1856051c536fa8
git push origin v0.5.1