Changed core.CanSeeUnit into a check to see if the required data is valid. This should have better performance.
Added a health check so we get less afraid of heroes with low health.
Added an item check so we are more afraid of heroes with a lot better items.
Changed RetreatFromThreat utility value decay to include hero threat.
Changed enemy threat debug spam to one line per hero.
Enemy threat debug numbers now only have 2 decimals.
Enemy threat debug reporting now also reports total threat for all heroes.
When enemy threat debugging is enabled, a red cross will be drawn on top of the hero whenever the behavior activates to make debugging easier (we now have a visual represenation whenever this behavior gives the bot an order).