Make get_utxos() and get_history() generators
Make get_utxos() and get_history() generators

The also take a limit.

bauerj/electrumx,thelazier/electrumx,shsmith/electrumx,Crowndev/electrumx,Crowndev/electrumx,erasmospunk/electrumx,erasmospunk/electrumx,shsmith/electrumx,bauerj/electrumx,thelazier/electrumx,Groestlcoin/electrumx-grs,Groestlcoin/electrumx-grs