Attempting to change to a null state is now a fatal error
Deal with negative statement polarities
"cool" now hints towards accepting
Don't divide by 0 in case we were at the exact opposite of the goal
Utility of 0 is an accepted product
Fixes in the state transition; Only ever ask for repetition twice
Don't ask for repetition on init turn as we already know what to do
Better "new critique force accept", fix memory corruption

1. Try to forcefully apply a new critique (with considered products
   having utility > 0). Only if that fails, allow products with
   utility >= 0
2. Memory leak by not removing deleted aspects from m_aspects