GNU Go 3.1.8 released October 1, 2001

The CVS tag for this release is rel-3-1-8.

The following patches are included:

gunnar_1_8.6. Reading patch. 
gunnar_1_8.7. Revised connection value. 
tuning_1_8.1. Tuning patch, bugfix 
gunnar_1_8.5. Revises dragon_stones and worm_stones functionality. 
inge_1_8.2. move_reasons.c made one dimensional. Now merged in the CVS. 
dsp.patch.gz. VC compilation changes. 
gtpstones_1_8.1. This patch adds gtp functions dragon_stones and worm_stones. 
teun_1_8.1. Revises rotated tests. 
gunnar_1_8.4. Revision of dragon_data. 
gunnar_1_8.3. Reading bugfix. 
eye_0_1.1. Eye tuning.
gunnar_1_8.4. fuseki.db split off from patterns.db 
mans_0_0.1.gz. Patch to extract_fuseki and fuseki13.db.
mans_0_0.2. Goes on top of the previous patch. 
inge_1_8.1. More one dimensional stuff. 
dragon_data_1_8.1. GTP commands dragon_data and worm_data were broke. 
trevor_1_8.1. Twogtp writes an html index. 
gunnar_1_8.1. Caves and cavities are eliminated. 
gunnar_1_8.2. Tuning. 
gunnar_1_8.3.gz. Dragon data moved to dragon2. 
gunnar_1_8.5. SGF code cleanup. 

This version does pretty well on the regressions.

- defend2() revised
- attack2() revised
- break_chain2_moves() revised
- connection_value() revised
- most parts of move_reasons.c converted to 1D
- domain calculation in optics.c now 1D
- hash.c is more 1D
- new function is_ko_point() in board.c
- computation of cavities removed from worm.c
- computation of caves removed from dragon.c
- computation of inessential worms moved from make_dragons() to make_worms()
- computation of ko points removed from make_worms()
- printing of cutting stones removed from genmove.c
- examine_cavity() simplified and made static
- cavity_recurse() simplified
- ko field removed from worm_data struct
- border field removed from dragon_data struct
- several fields moved from struct dragon_data to struct dragon_data2
- false_margin field eliminated from struct eye_data
- cleanup of sgf code
- extended functionality of gtp commands dragon_stones and worm_stones
- gtp_dragon_data returns a list of strings
- new gtp functions dragon_stones and worm_stones
- revision of extract_fuseki
- revision of fuseki.c
- bugfix in break_chain3
- bugfix in special_attack4
- warning fixed in mkpat
- formatting errors fixed in decidestring and other places: use %1m
- bugfix: trace in move_reasons.c
- gtp_dragon_data() revised
- new gtp functions dragon_stones and worm_stones
- twogtp-a writes html
- tuning
- owl tuning
- eye tuning
- one new test case in reading.tst
- new regression/games/trevor/* and unsorted tests mv'ed to trevor
- new tests xxlin.tst
- strategy4 target in regression/Makefile.am corrected
- rotated tests revised
- dsp files revised