Add hits, score fields to edge struct

include/r3.h

@@ -60,13 +60,16 @@ struct _node {
     void * data;
 
     uint8_t       endpoint;
+
 };
 
 struct _edge {
     char * pattern;
     int    pattern_len;
-    bool   has_slug;
     node * child;
+    uint64_t         hits;
+    float            score;
+    bool             has_slug:1;
 };
 
 typedef struct {

src/edge.c

@@ -28,6 +28,10 @@ edge * r3_edge_create(char * pattern, int pattern_len, node * child) {
     e->pattern = pattern;
     e->pattern_len = pattern_len;
     e->child = child;
+
+    // default stats
+    e->hits = 0;
+    e->score = 0;
     return e;
 }