Fulcrum will now have support for Litecoin, in addition to Bitcoin Cash and Bitcoin BTC.
Includes support for deserializing/reserializing mweb data, so Fulcrum should work with
latest `litecoind` `v0.21.2`. Note that no known Electrum clients on LTC know how to
*deal* with mweb data, but Fulcrum at least won't die on it when receiving txns or blocks
containing it from `litcoind` RPC.
See PR #144 for more details.
See also discussion here: https://github.com/spesmilo/electrumx/issues/179
