Path Finding and arbitrage detection works. Need to print out when detecting arbitrage.

src/finum.rs

@@ -24,6 +24,9 @@ impl FiNum {
     pub fn one() -> Self {
         FiNum(1u64<<32)
         }
+    pub fn infinity() -> Self {
+        FiNum(u64::MAX)
+        }
     pub fn is_tiny(self) -> bool {
         self.0>0u64 && self.0<=1u64
 	}