Timeout support

[JoleMile]

Does this library support timeout? I tried passing it through the options object, but it doesn't seem to work. Do you plan on supporting this in the near future?

[Overtorment]

timeout is not passed to socket, and is hardcoded to 5sec

rn-electrum-client/lib/client.js

Line 53 in cc018ef

this.conn.setTimeout(TIMEOUT);

Im not sure if this is even working..?