Rewrite fzf in Go

src/util.go

@@ -0,0 +1,21 @@
+package fzf
+
+func Max(first int, items ...int) int {
+	max := first
+	for _, item := range items {
+		if item > max {
+			max = item
+		}
+	}
+	return max
+}
+
+func Min(first int, items ...int) int {
+	min := first
+	for _, item := range items {
+		if item < min {
+			min = item
+		}
+	}
+	return min
+}