Reconnect WebSocket to WhatsApp on close (probably with some random delay)

[krombel]

Currently I sometimes get the following log

[Sep 18, 2018 06:01:39] [User/@test22:server/DEBUG] JSON message: ["Stream","asleep"]                                                                                                                                                
[Sep 18, 2018 07:40:36] [User/@test22:server/ERROR] WhatsApp error: unexpected websocket close: websocket: close 1000 (normal)                                                                                                       
error writing to socket: websocket: close senterror writing to socket: websocket: close sent[...]

So the device falls to sleep and after some timeout WhatsApp seems to close the socket.
The bridge currently needs a restart until it works again

[krombel]

This got implemented upstream in Rhymen/go-whatsapp#42 and Rhymen/go-whatsapp#46
This issue can therefore be closed after this dep has been updated.