Brightness issues above 0.1

[username223]

Thanks for the excellent crate.

0.6.0 is not available outside of the git repo even though the Github readme mentions it.

I'm not sure if any new features have been included since 0.5.0, I'm mainly after the updated rppal dependency to reduce compile time. :)

As an aside, is anything above 0.1 or so brightness supposed to be super bright? I've found that on the Pimoroni Fan Shim anything above 0.1 is ridiculously bright.