4.7.0

I'm very sad about the creator of the 808 passing away so to distract myself from epic sadness I am releasing some new Tachyons features.

For quite some time people have been requesting an additional step in the type scale for 12px / .75rem. While 12px isn't readable for body copy it does have it's place in limited usage so I've added it to core. Also added some classes for reversing column, row, and wrap in flexbox.

A big note of thanks and <3 to @dwyl for supporting Tachyons development.

• Add 7th step to type scale .f7 { font-size: .75rem }
• More flex: row, column, and wrap reverse have been added
• Add responsive classes for centering with margin auto .center
• Add classes for inheriting color values in skins, pseudo skins, and border modules
• Fix bug in media query declarations in outline module
• Update to normalize 6.0.0 (removes font-family declaration on form elements like buttons)
• Fix dead link in readme

Happy developing!