Add defaultTopicConfig, to allow adding more fields to TopicSpace later.
Add defaultTopicConfig, to allow adding more fields to TopicSpace later.

Ignore-this: 6dad95769651a9a1ef8d771f81c91f8e

darcs-hash:20091111012915-1499c-125a9eb4016c35753929c5e551f81d2e9083deaa

kmels/xmonad-launcher,kmels/xmonad-launcher