improve assurance
improve assurance a bit
fix bug
pre bugfix proxy2
Merge pull request #200 from senda-akiha/bugfix/maintenance-mode

pre bugfix for proxy2
fix bug : display default setting
add remove interface #196
refactor
send success log
[sync] 0.3.2.3
Merge pull request #201 from otiai10/develop

[sync master] 0.3.2.3