feat(factories): support functions

[levithomason]

As part of the v2 manifesto, we are allowing users to construct the render tree shorthand props themselves. More details to come. This is now possible:

  <Button
    content='Nice!'
    icon={(Icon, props) => <Icon name='thumbs up' {...props} />}
  />

We simply give the user the component, props, and children of what ever the shorthand prop was going to render. This allows the user to control the render tree, previously not possible with shorthand props.

[codecov-io]

Codecov Report

Merging #2790 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #2790   +/-   ##
=======================================
  Coverage   99.74%   99.74%           
=======================================
  Files         160      160           
  Lines        2762     2762           
=======================================
  Hits         2755     2755           
  Misses          7        7

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[levithomason]

Released in [email protected].