Type 'Base58' has no member 'encode'

[utdrmac]

Attempted to use example code from README

        let bytes: [UInt8] = [255, 254, 253, 252]

        let encodedString = Base58.encode(bytes)
        let decodedBytes = Base58.decode(encodedString)!

        print(encodedString) // 7YXVWT
        print(decodedBytes)  // [255, 254, 253, 252]

Fails to compile with noted error