working version with json analysis engine

config.json

@@ -3,12 +3,11 @@
     "pass_visits": 200,
     "pass_visits_fast": 50,
     "visits": 3500,
-    "visits_fast": 1500,
-    "nopass_visits": 10
+    "visits_fast": 1500
   },
   "board": {
     "size": 19,
-    "komi": 7.5
+    "komi": 6.5
   },
   "ui": {
     "size_min": 1,
@@ -35,7 +34,6 @@
     "balance_play_min_eval": 0.875,
     "balance_play_min_visits": 20,
     "undo_eval_threshold": 0.875,
-    "undo_outdated_eval_threshold": 0.8,
     "undo_point_threshold": 1,
     "num_undo_prompts": 1
   },