Exception header
Mild change to FindOrAdd interface
Build but do not use left/right trees
Bolt on the beginning or ending conditions
D'oh wrong direction for full
Reveal full state before the big branch
Niceness prioritization, but still bad performance
assertion that score doesn't change
Untested lazy tree building
Fix running out memory, still possibly wrong scores
Add checking for scores coming out of decoder
Clean up some indentation
const change, correct Bound ref
Fix single-thread compile with no link to boost_thread
Remove unused pooling