Item Tweaks

Tweaks some items to make them more useful. Individual tweaks can be enabled or disabled. Some tweaks are configurable. Changes: * Repulsion Armor Plate reduces incoming damage by 1% of your max health; can be changed to a fixed amount per stack. * Titanic Knurl now increases your maximum health by 15%; can also be changed to a fixed amount per stack. * Mired Urn's targeting filters out allies. Should make it less frustrating for multiplayer. Probably will tweak more items in the future.

To do

* Allow tweaks for Knurl's health regeneration? * Figure out a way to prevent Urn from tarring allies instead of not targeting them all togther?

Changelog

1.0.0 Release -- replaces UrnIgnoresAllies