Release 0.5.0

[tkf]

@JuliaRegistrator register(branch=release)

[JuliaRegistrator]

Registration pull request created: JuliaRegistries/General/40

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

git tag -a v0.5.0 -m "<description of version>" 98138332a926ef6e0025806d40b64076cb291d03
git push v0.5.0