Merge pull request #11 from kyuhojeong/master

[DEBUG] Proactive mode as a default
TinCan logging is configurable by config file
Merge pull request #12 from ptony82/feature/logging-config

TinCan logging is configurable by config file
Merge pull request #13 from kyuhojeong/master

[DEBUG] Remote node initial peer_state receipt key err
[DEBUG] Fail tracking traffic statistic after node destroyed
[DEBUG] removes commented codes
Merge pull request #14 from kyuhojeong/debug

[DEBUG] Fail to tracking traffic statistics after connection destroyed