brought child triggers w/o controls back
don't focus the dialog, focus an element

screen readers seem to do a better job this way,
for example, in VO you can still jump around
the page even though the dialog is open, but now
it drops you inside and the navigation is scoped
to only move around the dialog until you close it.

I tried focusing the title, but that still allowed
keyboard navigation outside of an open dialog
title component / default close
reworked default title/close button
cleared out left-over ic-tabs stuff
updated build script
basic testing infrastructure
docs
a wild README appears