Get Latest Pre-Release

[crossan007]

It seems that there is no way to get the latest pre-release from a repository.

#269 seems to hint at this, but rather asks for only non pre-releases, as opposed to only pre-releases

[crossan007]

I'm testing a solution for this here: https://github.com/crossan007/php-github-api/tree/allow-fetch-prerelease

[Nyholm]

We have some new docs here: https://github.com/KnpLabs/php-github-api/blob/2.1.0/doc/repo/releases.md#get-latest-actual-release