add debug info

inactive_limit update

Merge remote-tracking branch 'origin/develop' into feature/refactor_i…

…nstrument_minxin

update persisit_helper.py

update BaseDataSource.get_instruments

typo

revert

Merge pull request ricequant#527 from ricequant/fix_command_examples

Fix command examples

Merge pull request ricequant#519 from ricequant/develop

Develop to master