make db_time an instance variable instead of a class variable so the time will be correct when run from a queueing/messaging system and file is not loaded every time it's run.

fixed tests for saizai pull request
make db_time an instance variable instead of a class variable so the time will be correct when run from a queueing/messaging system and file is not loaded every time it's run.

fixed tests for saizai pull request
make db_time an instance variable instead of a class variable so the time will be correct when run from a queueing/messaging system and file is not loaded every time it's run.

fixed tests for saizai pull request
bump version