2.5.34 released November 6, 1999

- new function try_ko() based on trymove() takes an illegal ko
- optimization: defend2 tries the move that gives more liberties first
- ko modifications to break_chain, break_chain2, defend2 and attack3
- new field ko_depth and -K (--kodepth) options
- ko_depth and fourlib_depth set to 0 during make domains
- numerous minor changes to ko reading
- bugfix in updateboard
- break_through() fully implemented
- tuning of patterns2.db
- one new connections pattern