'caps' class on h3's (deprecated?)

[billcolumbia]

I noticed that a bunch of h3's throughout the docs had a caps class, and figured caps may have been changed to ttu but not updated in the actual markup of the docs.

I'd be happy to make a PR to fix it - but didn't want to submit one if this was intentional. Tachyons has been a solid learning resource, thanks for publishing!

[johno]

Sorry about the delay in responding. .caps has been deprecated and replaced with .ttu and .tracked. Though, I'm not sure if .caps should be removed or replaced with .ttu.tracked. @mrmrs would know more about the design side of the docs.

[mrmrs]

Somehow missed this. Yes deprecated. Still updating the docs in lots of spots :) PRs always welcome on the docs.