Use new base58 parser (Version: 2.1.0)

[godexsoft]

Summary

rippled introduced a new, faster parser for base58: https://github.com/XRPLF/rippled/pull/4327

Motivation

15x faster than the previous implementation. It shows about 10% speedup for RPC commands in rippled and should be for Clio too.

Solution

Use the new parser.

Paths Not Taken

• Write our own parser.
• Use a library
• Leave as is

[cindyyan317]

Link with #88