nix-bitcoin-0.0.39

#313 Lightning pool (@sputn1ck)

Highlights

New Lightning pool module that can be used as follows

 ### lightning-pool
 # Enable this module to use Lightning Lab's non-custodial batched uniform
 # clearing-price auction for Lightning Channel Leases.
 # Use the `pool` command to interact with the lightning-pool service.
 # Automatically enables lnd.
 # services.lightning-pool.enable = true;
 #
 # lightning-pool requires that lnd has a publicly reachable address.
 # Set this to create a public onion service for lnd.
 # nix-bitcoin.onionServices.lnd.public = true;