removed the list from MsgVizWrite due to wierd behaviour

See merge request !14

Merge API changes as proposed by Matteo for the VizTools

See merge request !13

added _api_version field in SessionLog messages, also adopter a let-it-crash approach when sending or receiving messages on the bus regarding amqp connection, channels and broken pipes

Deprecate type field from api

See merge request !12

some fixes, now pcap dumper creates empty pcap from begining, so we can query it and avoid getting an non exisiting file exception