Closes#104
DEFAULT_PORTS now a coin property
A Peer object maintains peer information
Revamp LocalRPC "peers" call to show a lot more information
Have lib/jsonrpc.py take care of handling request timeouts
Save and restore peers to a file
Loosen JSON RPC rules so we work with electrum-server and beancurd which don't follow the spec.
Handle incoming server.add_peer requests
Send server.add_peer registrations if peer doesn't have us or correct ports
Verify peers at regular intervals, forget stale peers, verify new peers or those with updated ports
If connecting via one port fails, try the other
Add socks.py for SOCKS4 and SOCKS5 proxying, so Tor servers can now be reached by TCP and SSL
Put full licence boilerplate in lib/ files
Disable IRC advertising on testnet
Serve a Tor banner file if it seems like a connection came from your tor proxy (see ENVIONMENT.rst)
Retry tor proxy hourly, and peers that are about to turn stale
Report more onion peers to a connection that seems to be combing from your tor proxy
Only report good peers to server.peers.subscribe; always report self if valid
Handle peers on the wrong network robustly
Default to 127.0.0.1 rather than localhost for Python <= 3.5.2 compatibility
Put peer name in logs of connections to it
Update docs
