Adding upstream version 0.8.9.

Signed-off-by: Daniel Baumann <daniel@debian.org>

pkg/util/util_numbers.go

@@ -0,0 +1,15 @@
+package util
+
+import "strings"
+
+const hex int = 16
+
+// StripNumberPrefix returns a number string with any base prefix stripped and it's corresponding base.
+// If no prefix was found, returns 0 to let strconv try to identify the base.
+func StripNumberPrefix(input string) (string, int) {
+	if strings.HasPrefix(input, "#") {
+		return input[1:], hex
+	}
+
+	return input, 0
+}