OpenRA/OpenRA — pull request #6575 by pchote (2014-09-27 03:05:07+00:00)
Title: Add elite self-healing bonus

Split from #6556, this ports SelfHealing to the new upgrade system and adds it as an elite unit bonus.

This doesn't include an upgrade rule for the `RequiresTech` → `RequiresUpgrade` change because it crosses multiple actors, which makes it a difficult thing to do for such a minor feature.