clintbellanger/flare-engine — pull request #218 by dorkster (2012-11-09 10:19:50+00:00)
Title: Item bonuses as Effects

items.txt should mostly remain the same, except what's mentioned below.
Corresponding Effects will need to be added to powers.txt.

**speed** is now a percentage, so items that have it as a bonus will need
to be adjusted. For example, `bonus=speed,150` will mean the item grants
150% speed.

Two new keys were added to powers: **tag** and **effect_additive**
tag allows setting a name that can be used to look up the power id
effect_additive is a boolean that determines if an effect magnitude
when adding a new Effect should be cumulitive or should replace itself.