http://htmlpreview.github.io/ is broken, use github pages instead?

[Rubydesic]

htmlpreview doesn't work very well, it butchers the stylesheets. This adds a CI action that literally just copies the documentation/javadoc/apidocs into a gh-pages branch. You can then enable github pages in Settings to publish the javadoc using github which seems to work much better

Compare: Github Pages vs htmlpreview

[npgall]

I agree.

This looks interesting, thanks! I'll take a look at this for the next release!