fixed help menu link error
fixed help menu bug report action error
recent open file is not exist file
append exist file check logic #49
Merge branch 'develop' into release/v0.4.0

* develop:
  append exist file check logic #49
  recent open file is not exist file
  fixed help menu bug report action error
  fixed help menu link error
fixed #44 reopen issue
Merge branch 'develop' into release/v0.4.0

* develop:
  fixed #44 reopen issue
update Info.plist
add error logger
Merge branch 'develop' into release/v0.4.0

* develop:
  add error logger
  update Info.plist