Add aio package and update the default behaviors on the fio options

What's Changed

• Retry timeouts by @bretambrose in #687
• Improve log init by @bretambrose in #686
• Add aio package init.py and fix all export by @jonathan343 in #688
• update the default behaviors on the fio options by @TingDaoK in #689

Full Changelog: v0.28.1...v0.28.2