API Version checking does not support xrpl-py==3.0.0

[desimmons]

Issue Description

When upgrading from xrpl-py==2.X.X to xrpl-py==3.0.0, JSON RPC requests to Xahau nodes return a 400: invalid_API_version

Steps to Reproduce

1. pip install xrpl-py==3.0.0

import xrpl
xrpl.ledger.get_fee(xrpl.clients.JsonRpcClient("https://xahau.network"))

Note, changing the client address to a rippled node does not display the same issue

Expected Result

1. pip install xrpl-py==2.5.0

import xrpl
xrpl.ledger.get_fee(xrpl.clients.JsonRpcClient("https://xahau.network"))

[dangell7]

To use xrpl-py with xahau you will need to use this repo.