v0.4.8-nightly

What's Changed

Bug Fixes

• Fix unexpected recompile (#638) by @drmingdrmer
• fix substring function (#636) by @b41sh
• Fix store if_not_exists check error and add REMOTE database intergration tests (#637) by @bohutang

Build/Testing/CI

• standalone docker for testing (#643) by @ZhiHanZ
• Fix store if_not_exists check error and add REMOTE database intergration tests (#637) by @bohutang

Features

• Support the aggregation functions argMax and argMin (#642) by @JmPotato

Improvement

• Expression validation (#641) by @sundy-li
• fix substring function (#636) by @b41sh
• [planners] rename ExpressionAction -> Expression (#635) by @sundy-li