Twilight now has a passive effect, it will set the default value of positive...

Twilight now has a passive effect, it will set the default value of positive and negative energies. Each turn the energies will raise or lower towars this value instead of 0
Circle of Warding projectile slow increased fivefolds
Halfed the cost of all Circles


git-svn-id: http://svn.net-core.org/repos/t-engine4@5955 51575b47-30f0-44d4-a5cc-537603b46e54