There's a ton here - this PR basically overhauls the whole CSS system to implement utility CSS, except for colors & some padding/mixins. Those will be addressed in a followup. This was getting too big.

One thing to call out - new font size generator that decouples the header level from the sizes, so that there's no weird calculation & font sizes are easier to change while still keeping the document semantically correct (this has changed project grid, for example).

In doing the following, there were also some design changes to standardize content & avoid subtle differences in behavior/repeated code. Namely, links are fancier now and the nav looks pretty different. With generated font sizes independent of header level, there are some font size tweaks now that it's easy.

Whole change list:

    * Removing transition includes

    * Consolidates scaling animations

    * Adds colors scss & moves around content

    * Created breakpoints, moved import order

    * Simplifies nav scss & adds positioning

    * Created grid.scss

    * Creates shadows, spacing, depth SCSS files

    * Adds links.scss

    * Fonts generation redone + grids standardized

    * Overhauls links, nav markup, adds more grid options

Bumps minor version