Add hsla color space

[peacememories]

Hi :)

I'm really interested in having one solution for color in the Elm ecosystem. One package I'd like to see use elm-color is tesk9/palette because it has a nice api for accessibility. The thing is, palette uses a Color type that can have both an hsl and an rgb representation. So to change the package to use elm-color there would have to be support for an hsla color space. Is this planned?

[Aaron VonderHaar]

Hi, sorry for the slow reply!

Yes, there's currently hsla support:

• https://package.elm-lang.org/packages/avh4/elm-color/latest/Color#hsla
• https://package.elm-lang.org/packages/avh4/elm-color/latest/Color#fromHsla
• https://package.elm-lang.org/packages/avh4/elm-color/latest/Color#toHsla