Add compat data for ::first-line CSS pseudo-element (#763)
Add compat data for ::first-line CSS pseudo-element (#763)

* Add `::first-line` CSS pseudo-element

* Add starting version to Opera `::first-line` behavior notes

chrisdavidmills/browser-compat-data,chrisdavidmills/browser-compat-data,mdn/browser-compat-data,mdn/browser-compat-data,teoli2003/browser-compat-data