Reintroduce SCSS and modular structure

[riede]

With v2 you removed SCSS support. Now, only one big file with all spinner exists. But I only want to import the Pulse Spinner and the Three Bounce Spinner. This is currently not possible.

Please reintroduce SCSS and the modular structure (with SCSS variables), so it is possible only to import the necessary spinner.

[gigadie]

I totally agree on this one here. Used to compile locally only what I needed, in my own scss files, but now I am not able cause the scss support is removed.
It would be great to have it back in order to have the same flexibility we used to.
Thank you