v1.0.0-alpha.4

Breaking changes

• #43 Rename mt-0, mt-15 and mt-30 to top-gap-0, top-gap and top-gap-big
• #48 Rename col to unit

New features

• #48 Add units-gap, unit-0, and flex-vertical
• Fix styles of <kbd>, <samp>
• Fix styles of abbr[title]
• Fix styles of <audio>, <video>
• Fix styles of <fieldset>, <legend>, <optgroup>, <option>, <progress>

Other changes

• Change gap-top and gap-top-big to 14px and 32px
• Change padding of <code>
• Change $width-gap from 15px to 14px
• #41 Design new site, add reference