Conver to regular Go vendor + dep tool

vendor/github.com/cheggaaa/pb/runecount_test.go

@@ -0,0 +1,20 @@
+package pb
+
+import "testing"
+
+func Test_RuneCount(t *testing.T) {
+	s := string([]byte{
+		27, 91, 51, 49, 109, // {Red}
+		72, 101, 108, 108, 111, // Hello
+		44, 32, // ,
+		112, 108, 97, 121, 103, 114, 111, 117, 110, 100, // Playground
+		27, 91, 48, 109, // {Reset}
+	})
+	if e, l := 17, escapeAwareRuneCountInString(s); l != e {
+		t.Errorf("Invalid length %d, expected %d", l, e)
+	}
+	s = "進捗 "
+	if e, l := 5, escapeAwareRuneCountInString(s); l != e {
+		t.Errorf("Invalid length %d, expected %d", l, e)
+	}
+}