New Sass options, Large CSS file

[stanfortonski]

Hi! I compared CoreUI to Bootstrap. I know that CoreUI adds some styling features. I copy coreui.scss file in to my resources folder and comment some stuff but even that file is 100KB larger than bootstrap 4. I go deeper and I think that I don't want to use some of features for example brand buttons or ghost buttons. I think that will be fine to add options $enable-brand-colors, $enable-btn-yourtype. What do you think? Will tree shaking be an option?