V3

# Goals
- Better documentation
- Easier customization through Sass variables
- Better theme examples
- Components

## To Do
- [x] Reorganize and clean up repo
- [x] Add Tempo grid
- [x] Use global variables for grid
- [x] Use only `-offset` instead of `pre` and `post`
- [x] Add Table Object
- [x] Better form styles
  - [x] Fieldset and legend styles
  - [x] Styled selects
  - [x] Inline checkbox and radio styles
- [x] Global variables
  - [x] Type scale + more sensible defaults
  - [ ] ~~White space scale~~
  - [x] Theme styles (borders, forms, etc.)
  - [x] Form and button styles
  - [x] New component styles
- [ ] ~~Multiple themes~~
- [ ] ~~Theming documentation~~
- [x] Lighter weight, relative line-height styles
- [x] Table styles
- [x] New components
  - [x] Navs (breadcrumbs, pagination, segmented control, pills, tabs, navbar, dropdown body)
  - [ ] ~~Dropdown~~
  - [ ] ~~Labels & Badges~~
  - [ ] ~~Box~~