This adds a little tick to the creep hp bars indicating a best guess of the active hero's damage.
For creeps without mana, it shows the % of the bar that would be done by listed minimum damage, assuming max hp of 550 + 10 * (# of creep upgrades so far) and armor of 2, the stats on a melee creep without any rax pushed down. For creeps with mana, the assumed max hp is 300 + 10 * (# of creep upgrades) and armor is 0, the stats on a ranged creep without any rax pushed down.
This is rough; it will be wrong if the creeps have modified armor, if you are about to proc an ability modifying your attack damage like Whiplash, or if anything else would modify damage done. It does, however, properly account for effect of the Logger's Hatchet on both ranged and melee heroes.
1.4: Fix a stupid bug where base damage updates were not reflected. Modify highlight scheme to mostly match @μ's version, which is superior to my original.
1.3: Fix a scaling issue that was showing a slightly larger highlight than intended.
1.2: Display only on team creeps. Fix armor calculation on ranged creep. Properly handle Logger's Hatchet.
1.1: Initial revision.