Technologies, auras (global ones in particular) and some cheats (e.g. i am too busy) have very similar effects: they modify existing template stats. However, they all use different systems.
This revision centralises these effects in a modifications manager, which handles global (tech/global aura) modifiers, applied for all entities of a player, and per-entity modifiers.
This makes it easy for scripts to add modifiers, enabling more advanced scenarios such as CBAs without having to rely on mods.